i have seen a fair few bots over the years/months however ones i have seen really seen get made are ones such as Yandere Student and another student and user or User x Teacher but not really ever seen ones such as single student as a yandere and the User
Bubble (Yandere) x User (Demon)
Cubbie X User
Other Students of both male and females solo as Yandere x User (Demon) these are some ideas for any bot creators still making in FPE Bots

another idea is a FPE school bot with the demon being the user along with Alice (yeah ik a lot of demon related bot ideas there isn't a lot of people making them) I'm aware in the past someone made one with Claire being together with the user who was a demon and stopped Alice however that creator got nuked or left on their own so that might get more people to talk to the bot that you make or if you dont like Claire or a certain role of the student you can make one with User (Demon) and a member of one of the bully trio (Zip, Edward and Oliver) some more ideas is ones to do with the other AU's Such as the Swap Au, Edgy verse Au or Even the Street town Au since the last time i looked there was only 3 bots to do with that specific Au.