Honestly? It's REALLY hard to find people interested for:
Madoka Magica
Splatoon
DSMP/MCYT (Not the actual people, but their personas-)
And I've still yet to find anyone for:
Dialtown (PLEASE I CRAVE THIS ONE SO MUCH AAAA-)
Murder Drones
Bandori
I mostly get requests for Genshin or PJSK, and...