A: Clans Burrock, Fire Mandrill, Goliath Scorpion and Widowmaker.
Q: What was the true fate of Clan Wolverine? (According to an unidentified source).
Actually, BattleCorps fiction: Betrayal of Ideals, written by Blaine Lee Pardoe has it that the Warhead was fired from a Snow Raven warship aimed for a dropship that had Not-Named sibkos and solehma. At the last moment the Dropship evaded and the warhead hit Dehra Dun. Of course that is not how it is recorded.
I chose to ignore Blaine Lee Pardoe and his blasphemous claim, as far as I can tell the only reason the Snow Ravens exist and have survived this long is because the fluff writers enjoy screwing them over on the rare times they even bother to mention them