any kind of fandom you want. Though I would prefer a show or movie fandom as you usually have more info when watching a show or movie rather than playing a game or listening to story based songs.
uhm... I'm gonna say the series I know... that are not anime
Stranger Things
ATLA and LOK (they're a package deal ALSO NOT AN ANIME)
Creeped Out
She-Ra
How to Train Your Dragon: Race To The Edge (I also know the movies)
Gravity Falls
Miraculous Ladybug
Black Mirror (kind of)
The Good Place
The Owl House
and I can't think of much else