Meta employees
The folks below are apparently Meta employees as noted from their bios. AND they at least occasionally post about Threads :-).
IMPORTANT - PLEASE READ THIS
DO NOT bug these folks about Threads stuff in non-Threads-related posts!
e.g., DO NOT BE A JERK BY DOING SOMETHING LIKE THIS:
They: "Look at these pics of my cute kid!"
Jerkface: "When is [Threads feature] coming???"
Thank you for being considerate! We're lucky to have Threads folks often publicly sharing interesting tidbits about their work; let's not be greedy paparazzi :-).
If you're on mobile, feel free to load this spreadsheet directly for better readability :)
Note: There are quite likely other Meta/Threads folks posting publicly about Threads that I'm not aware of; feel free to clue me in via the contact options here :)
Not interested in including any Meta folks who aren't posting publicly about Threads; let's respect their privacy.