if the bloodfang pack were the ones that attacked gilneas, does that mean that you and crowley and anyone who turned into worgen were in the bloodfang pack after the cathedral scene?
if that's the case, I'm guessing that the bloodfang pack are just the worgen who didn't accidentally find the blackwald and temporarily regain their sanity whilst nearby.
in which case it would be:
gilnean worgen: you, crowley (both ex bloodfang) the worgen with crowley (also ex bloodfang), genn, any worgen that crowley managed to find and bring to the blackwald
Bloodfang: any worgen who were still feral when you regained your sanity, most likely they were rounded up by the night elves or some of crowley's worgen and made sane again later
does that sound about right?