Yes..Many of the old Gorath community are on Helm of Graush. Including members from DMG-I, Immortals, xXx, DF, RE, ADV, Thune, TTF, KOG, and many more.
in SWTOR:
Empire side guilds: Grief, xXx, TTF, ADV
Rebel side guild: ePeen
there are also others...but those are the only ones that come to mind right now.