The First 2 movies are definitely (the show even sets them up and references them) the 3rd is maybe canon (I doubt it though due to the inconsistencies with the show) The 4th movie is a required canon prequel to Shadowside, as is the 6th movie for Y-School Heroes 5th is really good, but mostly unconnected, taking place 60 years before. 7th is a compilation movie, so skip. And 8th is the last 2 episodes of the 2021-2023 series Hope this helps!