JoJo's Bizarre Adventure is not a typical anime series. For one, it doesn't follow a single narrative. Instead, it's broken up into separate parts, each with its own set of characters, villains, setting, story, and even its own unique JoJo protagonist. It's a novel way to set up a series, and it's proved to stand the test of time as the series is over 30 years old.
Source:https://www.cbr.com/jojos-bizarre-adventure-every-part-ranked-worst-best/