You forgot Beach Boys drummer Dennis Wilson, there are a couple of interviews from 1968/69 where he talks about Manson as his guru and living at Spahn’s Ranch with 14 girls and sex with 15 year olds. Hollywood and the music industry has been messed up for a long, long time.
Dorris Day's son was involved with Charles Manson. He lived where Sharon Tate was murdered. He had just moved out of there and Manson was angry with him. The media never told you about this.
add niel young to the list