Movies about Charles Manson

Today is the date of the Manson Family murders. So how many Manson-themed movies are there? I've only seen the original 1976 TV movie Helter Skelter, and another one called The Helter Skelter Murders that I never could find out anything about. I found it in a grocery store video rental section when I was in college in the 90s. It appeared to be very low budget and I can't find it listed anywhere. I'm not sure when it was made but at that time I assumed it was fairly new, but by the look of it it could've been made in the early 70s.

There's a bunch of others I only recently found out about and have not seen:

The Manson Family
Manson Family Movies
Manson
Six Degress of Helter Skelter

Are any of these worth seeing?