Once Upon a Time in Hollywood
This one is a loosely true story, when it comes to the sordid tale of Sharon Tate and the Manson Family, and contains actual people who existed, such as Charles Mansion, Bruce Lee, Steve McQueen and George Spahn.
There’s enough truth in Tarantino’s fiction for this film to count, but it’s also one hell of a flick. Especially if you see it in 35mm.