I was on Bristlebane and still play regularly with a friend I met there 25yrs ago. We organised guild wars and were the leaders of Forces of Light (me) and Forces of Darkness (her), though (Lord) Balar must take the credit for setting that all up, as well as for leading the players in the Battle of Kithicor (original 1999 Hallowe'en GM event which caused Kith to become dangerous after dark).
In FoL/FoD: Katlinel, Daneni
I was also in The Self Preservation Society
[You must be logged in to view images. Log in or Register.] It was formed out of the remnants of United Kingdoms, which was the top EU guild in the SoV/Luclin era.
Back then, mostly: Mari (Cleric) + Meganstar (Beastlord)