Using Mermaid markdown is an excellent way to create and present organizational charts in a text-based format that's both easy to understand and update. Below is how you can structure the TBX Team Org Chart using Mermaid markdown syntax:

```mermaid
graph TD
    CE[Client Executive: Stephanie Chambers]
    ET[Engineering Team: Jason Davis]
    Lumen>Lumen]
    LumenISR[ISR: Mia Mobmay]
    LumenBuyer[Buyer: Greg Wiemer]
    Comcast[Comcast and Charter Spectrum]
    ComcastISR[ISR: Kristin Hancock]
    ComcastBuyer[Buyer: Beth King]
    Cox[Cox/Rapidscale/ePlus]
    CoxISR[ISR: Manoucia Katimi]
    CoxBuyer[Buyer: Kurt White]
    GTT[GTT/MidMarket Cisco Collab]
    GTTMem1[Lauren Turley]
    GTTMem2[Scott Sonderman]
    ISM[Inside Sales Managers]
    ISM1[Lauren Turley]
    ISM2[Marisa Bearden]
    BM[Buying Manager: Scott Sonderman]
    CXT[TBX CX Team]
    CX1[Jess Dorney]
    CX2[Jenni Stuart]
    CX3[Julia Anderegg]
    MediaSupport[Media WWT Support]
    Media1[David Fernandez]
    Media2[Wayne Sonnylal]
    CharterSupport[Charter Spectrum WWT Support]
    Charter1[Sheryl Edwards]
    Charter2[Chris Campbell]
    Charter3[Colm Dalton]
    Charter4[Brian Daus]
    Charter5[Kelly Sickles]
    ComcastSupport[Comcast WWT Support]
    ComcastSup1[Steve Fryer]
    ComcastSup2[Sal Ternullo]
    CoxSupport[Cox WWT Support]
    CoxSup1[Sheryl Edwards]
    CoxSup2[Davis Nall]
    CoxSup3[Jon Hoey]
    EmergingSupport[Emerging Support]
    Emerging1[Mark Yaeger]
    Emerging2[Emily Cockrum]
    Legal[Legal: Sharon Briggs]
    Finance[Finance: WWT/Telcobuy Finance Teams]
    Services[Services: Aaron Piwowarczyk, Brandon Gasparovic]

    CE --> ET
    CE --> Lumen
    Lumen --> LumenISR
    Lumen --> LumenBuyer
    CE --> Comcast
    Comcast --> ComcastISR
    Comcast --> ComcastBuyer
    CE --> Cox
    Cox --> CoxISR
    Cox --> CoxBuyer
    CE --> GTT
    GTT --> GTTMem1
    GTT --> GTTMem2
    CE --> ISM
    ISM --> ISM1
    ISM --> ISM2
    CE --> BM
    CE --> CXT
    CXT --> CX1
    CXT --> CX2
    CXT --> CX3
    CE --> MediaSupport
    MediaSupport --> Media1
    MediaSupport --> Media2
    CE --> CharterSupport
    CharterSupport --> Charter1
    CharterSupport --> Charter2
    CharterSupport --> Charter3
    CharterSupport --> Charter4
    CharterSupport --> Charter5
    CE --> ComcastSupport
    ComcastSupport --> ComcastSup1
    ComcastSupport --> ComcastSup2
    CE --> CoxSupport
    CoxSupport --> CoxSup1
    CoxSupport --> CoxSup2
    CoxSupport --> CoxSup3
    CE --> EmergingSupport
    EmergingSupport --> Emerging1
    EmergingSupport --> Emerging2
    CE --> Legal
    CE --> Finance
    CE --> Services
```

This Mermaid diagram starts with the Client Executive, Stephanie Chambers, at the top and branches out to each team and team member as you provided. Each box represents a role or a person, and the lines illustrate the reporting structure or relationship.

To use this, you'll need a platform that supports Mermaid markdown rendering, like GitHub, GitLab, or a markdown editor that supports Mermaid diagrams. Simply paste this code into a compatible editor or viewer to visualize your organizational chart. This makes updating or modifying the org chart easier, as you can adjust the markdown text to reflect any changes in the team's structure.