Wow! That was a really long list though it seems that I detect A card based basis

I myself love Furry RP but have seen few that last

I also have a theory about why so many have trouble with HP rp, it's the worn out setting of Hogwarts, been there done that too often. I always thought playing adults in the Wizarding World would be more fun, heck I once tried to start an HP rp that was Band based where the PCs were members of a Wizarding band that traveled the world playing all sorts of gigs.

In the High school area I was actually considering posting a 1X1 about Greek Gods reincarnated as High schoolers. They wouldn't be as God like in power but their primary traits would be present
Mars would be the Football team's star Quarterback
Zeus President of the student body
Aphrodite the head cheerleader
Athena the class Valedictorian
An so on
I know weird right?