My cartoon/anime inspos are kinda all over the place but the ones that immediately come to mind would probably be like Sonic X, Deltora Quest, Sword Art Online, She-ra (netflix), Kim Possible maybe even TMNT or those Moomin cartoons
Even some of the mentions above like Cyberchase, Hey Arnold, Teen Titans come to mind or some of my faves like The Proud Family and That's So Raven
Granted I've got several in dev stories so that probably plays into why there's such an odd variety but a lot of the time it's "i like this thing but what if it fit my niche interests specifically". I've always been an imaginative person too so I can't deny my habit of making self inserts solely for the purpose of exploring said concepts as well