Building out a spectrum of social and political theories in play in modern society, particularly in the U.S. and EU, involves examining a range of ideas that influence public policy, social movements, and political discourse. These theories span across the political spectrum, from conservative to liberal and radical ideologies. Below is a balanced overview of some prominent theories and concepts that are actively shaping discussions and policies in these regions.

### Neoliberalism

- **Overview**: Advocates for free-market capitalism, minimal state intervention in the economy, and the privatization of public services. Neoliberal policies emphasize deregulation, globalization, and a reduction in government spending on social services.
- **Impact**: Influential in both the U.S. and EU, neoliberalism has shaped economic policies since the late 20th century, promoting international trade agreements and financial deregulation.

### Keynesian Economics

- **Overview**: Suggests that government intervention can stabilize the economy through fiscal and monetary policies, especially during recessions. Keynesianism supports government spending to mitigate economic downturns and manage demand.
- **Impact**: It has seen a resurgence in response to economic crises, influencing stimulus measures and monetary policies in the U.S. and EU to foster recovery.

### Social Democracy

- **Overview**: Combines capitalism with strong welfare states and labor rights, advocating for policies that reduce inequality, provide universal healthcare, and ensure social protections for all citizens.
- **Impact**: Particularly influential in the EU, with countries adopting models that prioritize social welfare, comprehensive healthcare, and extensive social services, influencing some policy debates in the U.S.

### Populism

- **Overview**: Focuses on the conflict between "the elite" and "the people," with leaders claiming to represent the will of the general populace against a corrupt or out-of-touch establishment.
- **Impact**: Populism has gained momentum in both the U.S. and EU, affecting immigration policies, national sovereignty debates, and the political landscape, with significant electoral successes on both the right and left.

### Progressivism

- **Overview**: Advocates for social reform to address issues of inequality, environmental protection, healthcare reform, and social justice. It emphasizes the role of government in ensuring equity and addressing systemic issues.
- **Impact**: Progressivism influences policy discussions on healthcare, climate change, and social equity in the U.S., with similar movements in the EU advocating for comprehensive social policies and environmental action.

### Conservatism

- **Overview**: Emphasizes traditional values, limited government, national sovereignty, and free markets. Conservative policies advocate for low taxes, individual liberty, and a cautious approach to social change.
- **Impact**: Conservative parties and policies remain influential in both the U.S. and EU, shaping debates on immigration, taxation, and the role of government in society.

### Green Politics

- **Overview**: Focuses on environmental issues, sustainability, and addressing climate change through policy reforms. It advocates for renewable energy, conservation efforts, and sustainable development.
- **Impact**: Green parties and movements have gained traction in the EU, influencing environmental policies and climate agreements. Environmental issues are increasingly central to political discourse in the U.S. as well.

### Libertarianism

- **Overview**: Advocates for individual freedom, minimal government intervention, and a free-market economy. It emphasizes personal and economic liberty, seeking to reduce government control and taxation.
- **Impact**: While more niche, libertarian ideas influence discussions on civil liberties, economic policies, and the size of government in the U.S. and, to a lesser extent, in the EU.

This spectrum represents a range of theories that contribute to a dynamic and evolving political discourse in modern society. Each theory offers different perspectives on governance, economics, social welfare, and individual freedoms, reflecting the diverse viewpoints and policy approaches in the U.S. and EU.

Given your requirements, structuring the information in JSON format is a great choice for flexibility and ease of maintenance. This format allows you to easily add or remove entries, and JSON is widely supported across various data processing and web technologies. Here's an example structure for documenting influential organizations and individuals in the U.S. that align with the various political and economic theories discussed:

```json
{
  "Neoliberalism": [
    {
      "name": "The Heritage Foundation",
      "type": "organization",
      "description": "A conservative think tank known for advocating free-market policies, limited government, and deregulation.",
      "website": "https://www.heritage.org/"
    }
  ],
  "Keynesian Economics": [
    {
      "name": "Paul Krugman",
      "type": "individual",
      "description": "Nobel Prize-winning economist and columnist known for his advocacy of Keynesian economic policies.",
      "website": "https://twitter.com/paulkrugman"
    }
  ],
  "Social Democracy": [
    {
      "name": "Bernie Sanders",
      "type": "individual",
      "description": "U.S. Senator and former presidential candidate known for his support of social democratic policies like universal healthcare and free college tuition.",
      "website": "https://www.sanders.senate.gov/"
    }
  ],
  "Populism": [
    {
      "name": "Donald Trump",
      "type": "individual",
      "description": "45th President of the United States, known for his populist rhetoric and policies.",
      "website": "https://www.donaldjtrump.com/"
    }
  ],
  "Progressivism": [
    {
      "name": "The American Prospect",
      "type": "organization",
      "description": "A progressive political and public policy magazine.",
      "website": "https://prospect.org/"
    }
  ],
  "Conservatism": [
    {
      "name": "The Federalist Society",
      "type": "organization",
      "description": "An organization of conservatives and libertarians that advocates for a textualist and originalist interpretation of the United States Constitution.",
      "website": "https://fedsoc.org/"
    }
  ],
  "Green Politics": [
    {
      "name": "Greenpeace USA",
      "type": "organization",
      "description": "An independent environmental organization that promotes efforts to address global climate change and protect biodiversity.",
      "website": "https://www.greenpeace.org/usa/"
    }
  ],
  "Libertarianism": [
    {
      "name": "Cato Institute",
      "type": "organization",
      "description": "A libertarian think tank that advocates for public policies based on individual liberty, limited government, free markets, and peace.",
      "website": "https://www.cato.org/"
    }
  ]
}
```

This JSON structure lists some of the most influential organizations and individuals associated with each theory in the U.S., including their type (organization or individual), a brief description, and a website for more information. This example focuses on major influencers that align with the 80/20 rule, highlighting those who significantly impact discussions and policy formulations in their respective fields.

For documentation in markdown, you might structure your information like this, using one of the entries as an example:

```markdown
## Neoliberalism

- **The Heritage Foundation**
  - **Type**: Organization
  - **Description**: A conservative think tank known for advocating free-market policies, limited government, and deregulation.
  - **Website**: [https://www.heritage.org/](https://www.heritage.org/)
```

You can replicate this markdown structure for each theory and its associated influencers, providing a clear, readable format for documentation purposes.

---

Given the constraints and to further expand the data within those limitations, I'll add a few more influential organizations and individuals across the specified theories. This expansion will help to illustrate the diversity of thought and influence within these ideologies in the U.S. Note that while the entities listed are influential, the landscape is dynamic, with other organizations and individuals also contributing significantly to their respective fields.

```json
{
  "Neoliberalism": [
    {
      "name": "Cato Institute",
      "type": "organization",
      "description": "Libertarian think tank focused on public policy research advocating limited government and free markets.",
      "website": "https://www.cato.org/"
    }
  ],
  "Keynesian Economics": [
    {
      "name": "Joseph Stiglitz",
      "type": "individual",
      "description": "Nobel laureate economist known for his critical view of the management of globalization, free-market economists, and international institutions like the International Monetary Fund.",
      "website": "https://www8.gsb.columbia.edu/faculty/jstiglitz/"
    }
  ],
  "Social Democracy": [
    {
      "name": "Elizabeth Warren",
      "type": "individual",
      "description": "U.S. Senator and academic, known for her focus on consumer protection, economic opportunity, and the social safety net.",
      "website": "https://www.warren.senate.gov/"
    }
  ],
  "Populism": [
    {
      "name": "Tucker Carlson",
      "type": "individual",
      "description": "Television host and conservative political commentator, known for his populist views.",
      "website": "https://www.foxnews.com/person/c/tucker-carlson"
    }
  ],
  "Progressivism": [
    {
      "name": "ACLU",
      "type": "organization",
      "description": "The American Civil Liberties Union works to defend individual rights and liberties guaranteed by the Constitution and laws of the United States.",
      "website": "https://www.aclu.org/"
    },
    {
      "name": "The Progressive",
      "type": "organization",
      "description": "A magazine that aims to amplify progressive voices for peace, social justice, and the common good.",
      "website": "https://progressive.org/"
    }
  ],
  "Conservatism": [
    {
      "name": "National Review",
      "type": "organization",
      "description": "A semi-monthly conservative editorial magazine focusing on news and commentary pieces on political, social, and cultural affairs.",
      "website": "https://www.nationalreview.com/"
    }
  ],
  "Green Politics": [
    {
      "name": "Sierra Club",
      "type": "organization",
      "description": "One of the most influential grassroots environmental organizations in the U.S., the Sierra Club promotes sustainable energy, environmental conservation, and the protection of natural resources.",
      "website": "https://www.sierraclub.org/"
    }
  ],
  "Libertarianism": [
    {
      "name": "Reason Foundation",
      "type": "organization",
      "description": "A libertarian think tank that publishes Reason magazine, dedicated to advancing free minds and free markets.",
      "website": "https://reason.org/"
    },
    {
      "name": "Rand Paul",
      "type": "individual",
      "description": "U.S. Senator known for his libertarian-leaning views on government spending, privacy, and foreign policy.",
      "website": "https://www.paul.senate.gov/"
    }
  ]
}
```

This expanded JSON structure offers a broader view of influential entities across different political and economic theories in the U.S., each contributing to the discourse and policy-making in their respective areas of focus. Whether organizations or individuals, their influence spans academia, policy, activism, and media, reflecting the complex and multifaceted nature of American political and social thought.

---

```json
{
  "Conservatism": [
    {
      "name": "National Rifle Association (NRA)",
      "type": "organization",
      "description": "Advocates for gun rights and the Second Amendment, with a large and active membership base.",
      "website": "https://www.nra.org/"
    }
  ],
  "Progressivism": [
    {
      "name": "MoveOn",
      "type": "organization",
      "description": "A progressive public policy advocacy group and political action committee that raises millions of dollars for candidates it identifies as progressives.",
      "website": "https://moveon.org/"
    }
  ],
  "Environmentalism": [
    {
      "name": "Natural Resources Defense Council (NRDC)",
      "type": "organization",
      "description": "An international nonprofit environmental organization with more than 3 million members and online activists, focused on global warming, clean energy, and conservation.",
      "website": "https://www.nrdc.org/"
    }
  ],
  "Social Democracy": [
    {
      "name": "Our Revolution",
      "type": "organization",
      "description": "Inspired by Bernie Sanders' 2016 presidential campaign, Our Revolution aims to continue the political revolution by championing progressive issues and candidates.",
      "website": "https://ourrevolution.com/"
    }
  ],
  "Libertarianism": [
    {
      "name": "Libertarian Party",
      "type": "organization",
      "description": "The third largest political party in the United States, advocating for a smaller government, lower taxes, and more personal freedoms.",
      "website": "https://www.lp.org/"
    }
  ],
  "Civil Rights": [
    {
      "name": "NAACP",
      "type": "organization",
      "description": "The National Association for the Advancement of Colored People is one of the oldest and most influential civil rights organizations in the United States.",
      "website": "https://www.naacp.org/"
    }
  ],
  "Labor Rights": [
    {
      "name": "AFL-CIO",
      "type": "organization",
      "description": "The American Federation of Labor and Congress of Industrial Organizations represents 12.5 million workers in over 50 labor unions across various sectors.",
      "website": "https://aflcio.org/"
    }
  ],
  "Populism": [
    {
      "name": "People's Party",
      "type": "organization",
      "description": "A political party that aims to represent the interests of ordinary people through policies that focus on social and economic issues.",
      "website": "https://peoplesparty.org/"
    }
  ]
}
```

```json
{
  "Influential Businesses": [
    {
      "name": "State Street",
      "type": "Financial Services",
      "description": "State Street Corporation, known for its investment management and servicing, participates in political discussions primarily through corporate contributions focused on financial and regulatory policies.",
      "website": "https://www.statestreet.com/"
    },
    {
      "name": "BlackRock",
      "type": "Financial Services",
      "description": "As the world's largest asset manager, BlackRock wields significant influence on issues related to sustainable investing and financial regulations, often advocating for policies that support environmental, social, and corporate governance (ESG) criteria.",
      "website": "https://www.blackrock.com/"
    },
    {
      "name": "JP Morgan",
      "type": "Financial Services",
      "description": "JP Morgan Chase & Co., a global leader in financial services, engages in various policy discussions, particularly those affecting the banking sector, economic growth, and corporate responsibility.",
      "website": "https://www.jpmorganchase.com/"
    },
    {
      "name": "FAANG Companies",
      "type": "Technology and Entertainment",
      "description": "This acronym represents Facebook (Meta), Apple, Amazon, Netflix, and Google (Alphabet), each playing a significant role in political and social debates, particularly around privacy, taxation, and antitrust issues.",
      "website": "Individual company websites"
    },
    {
      "name": "FAB 7",
      "type": "Various Industries",
      "description": "An informal grouping of Facebook (Meta), Amazon, Alphabet, Berkshire Hathaway, BlackRock, JP Morgan, and Microsoft, representing sectors from technology to financial services, each with substantial influence on policy and political discourse.",
      "website": "Individual company websites"
    }
  ]
}
{
  "FAANG Companies": [
    {
      "name": "Facebook (Meta)",
      "type": "Technology",
      "description": "Influences digital communication, privacy, and social media regulation discussions.",
      "website": "https://about.fb.com/"
    },
    {
      "name": "Apple",
      "type": "Technology",
      "description": "Engages in policy debates on privacy, encryption, and technology innovation.",
      "website": "https://www.apple.com/"
    },
    {
      "name": "Amazon",
      "type": "E-commerce and Technology",
      "description": "Active in discussions around e-commerce regulation, taxation, and labor practices.",
      "website": "https://www.amazon.com/"
    },
    {
      "name": "Netflix",
      "type": "Entertainment",
      "description": "Influences copyright, digital distribution, and entertainment industry regulations.",
      "website": "https://www.netflix.com/"
    },
    {
      "name": "Google (Alphabet)",
      "type": "Technology",
      "description": "Participates in debates on internet search regulation, privacy, and technology's societal impacts.",
      "website": "https://www.abc.xyz/"
    }
  ],
  "FAB 7 Companies": [
    {
      "name": "Facebook (Meta)",
      "website": "https://about.fb.com/"
    },
    {
      "name": "Amazon",
      "website": "https://www.amazon.com/"
    },
    {
      "name": "Alphabet",
      "website": "https://www.abc.xyz/"
    },
    {
      "name": "Berkshire Hathaway",
      "type": "Conglomerate",
      "description": "Influences financial, insurance, and investment policy discussions.",
      "website": "https://www.berkshirehathaway.com/"
    },
    {
      "name": "BlackRock",
      "website": "https://www.blackrock.com/"
    },
    {
      "name": "JP Morgan",
      "website": "https://www.jpmorganchase.com/"
    },
    {
      "name": "Microsoft",
      "type": "Technology",
      "description": "Engages in policy discussions on software standards, cybersecurity, and digital governance.",
      "website": "https://www.microsoft.com/"
    }
  ]
}
```