Basically, all of them.
Lessee, ones that I remember being mentioned; The Beatles(used drugs, John shacked up with Yoko, the Jesus comment) The Stones(drugs, badboy image), Led Zeppelin(drugs, mysticism, Stairway played backwards said something or other), The Who(drugs, violence, Pete smashed guitars ya know), Black Sabbath(satanism), Bob Dylan(trouble maker), Fleetwood Mac(mysticism, drugs), Eageles(drugs, Hotel Calif. was satanic), Prince(sex), Queen(gay and backward masking), Huey Lewis(drugs), James Taylor(mental patient),KISS(Knights In Satan's Service), RUSH(Raised Under Satan's House), all Disco(sex), all Heavy Metal(violence), all Rap, Hip-Hop(sex, language, violence). There were many, many more.
One funny one was a sister during the WT study on debasing music(for the umpteenth time) said that her daughter brought home an album by a band called 10,000 Maniacs. She made her get rid of it, because she wouldn't allow one maniac in her house, let alone 10,000. It kills me how people jump to conclusions. If she had bothered to listen to the album, I'm sure she wouldn't have minded. They were a pretty tame band, talented, but tame.