there's a lot, so just list however many you want. MBTI helps me understand characters better, which helps me analyze them for artigos and stuff better.
Anastasia- xNFP, possibly INFP
Amalthea- ISTJ? It's hard to say if she just acts like a Thinker because unicórnios are fundamentally different from humans or that's just how she is. I need to finish watching it to see her functions.
Kayley- probably ESFP
No clue about Yum Yum though. I've tried watching the movie twice and it's a bit hard for me to get into.