The newest entry into that field is The Secret Society of Second Born Royals, which is, at its core, a superhero team origin story movie, and you can’t really have one of those these days without setting up the option for more stories down the road, and the ending of The Secret Society for Second Born Royals certainly does that.
The following contains major spoilers for The Secret Society of Second Born Royals.
Disney+ has had a pretty strong track record so far when it comes to its original movies.
Go watch it on Disney+, then come back to hash out the ending.