devtrackers.gg
Most of them are probably Ninjas and not many know that well or the BTS team.
A fair few I recognise and a few I looked up and was like "Oh yeah I know them now".
I can just picture the Jmod running around the room going "Sign this" lol.
The majority of the Jmods on that concept art are from Player Support, apart from the couple exceptions. :)
Mod Cake.~
Glad you love the concept art! :D
Mod Cake.~