Deep Purple..IIRC, Ritchie Blackmoore and Joh Lord are serious pranksters and good marketers. Their music style shifts to fit the sound of the for money. They didn't care much fo hippies and acid, but when rolling out first album (which sounds nothing like the second-…) they kinda larped and Deep Purple. Before working on second studio album (the first one hit the tail of stuff like the Yardbirds, did not do well) they hoped aboard the Zepplin/Black Sabbath/Cream band wagon, but were stuck with the name.
Black Sabbath-Originally Earth (mid 60's Hippie). After Tony Iommi's stint with Jethro Tull found out bigger English hippie band named Earth. Geezer Butler (bassist/lyricist and devout christian) loved old Hammer horror flicks and and came up with Black Sabbath as an appropriately dark name for the riffs he and Iommi were putting out.
Led Zepplin-After listening to the bands rough cut of thier first album, Kieth Moon (drummer of the Who) stated "Well that oughta go over like a lead zeppelin."
While third eye blind and alien ant farm seem to fit cabal occult bill, it seems to me that from 1988 until Napster, the music industry was a solid cartel and "All of your songs are belong to us", and after destroying MTV (which actually used to play music videos) they let their comtempt for the masses hang out in the open.