I wrote a quick list of character locations for my reference, but it could help out other players trying to get their bearings in the IC:

Zar Vorgul: Corina, Daigon, Glory, Gost, Har-dok, The Mad Knight, Preach
Godsfangs: Cerys, The Hermit(?)
Zar Endal: Alkhazar(?)
The Claws: Barsabbas