It's silly and probably vaguely problematic (idk I haven't watched it in years) but I love the Disney movie Zombies. It's just so wholesome and...bright
Scripted podcasts can be the best sometimes though! You might like The Bright Sessions (therapy sessions for people with supernatural powers). And Welcome to Night Vale is a classic, of course.
If you have any interest in fiction podcasts, I like Hello From the Magic Tavern. It's an improv comedy where the host is a person from Earth who got transported into a D&D-esque world. I'm still making my way through the backlog, but it's been very enjoyable so far (though the jokes don't...
Is there a way to cut down on the number of total gangs, or is that super important to the story? It might be easier for readers if there are fewer gangs to keep track of (less internal politics to keep straight, etc.), would also let you develop them more, and might also be easier for the two...