I instantly thought Phish haha but you certainly can't forget The Beatles, Pink Floyd and Led Zeppelin! I'm not much of a fan but The Disco Biscuits seem to have a little wook cult going on haha. Then you got Radiohead, Flaming Lips, Talking Heads, Ween, Further, moe., DMB, Umphrey's McGee, Widespread Panic, Sublime, Bad Brains, etc... Today feels like a Ween day
The ICP crew....they have been wreaking havoc in my area lately...egging houses and vandalizing cars and buildings.
The Screaming Trees comes to mind One of my fav bands in the 90s, when other less talented grunge bands had taken over. You were either a big fan or you'd never heard of them Slipknot certainly had a cult following but they turned mellow pretty quick so I guess thats over Bullet for my Valentine - a either love them or hate them group Into The Dead Weather at the moment, but they too are an aquired taste
According to my father (who got my in-to Genesis, my favorite band), Genesis was a cult band back from around 1971-1976, and then they gained a more diverse fan base around 1980 or so.
Atari Teenage Riot They are another one, evveryone else i ever knew fuckin hated them, they certainly had a cult following