(Repost/Rewrite) What does the AI moderation usually flag?

Hi, I'm using Pokemon music recreated by Zame, a Kevin Macleod song, and piano covers of Kingdom Hearts music in my recent nearly finished animation project, including an anime OST I recreated myself. I'm going to give links and credits to all original composers in the description, but I'm still so worried about AI moderation flagging my video or randomly terminating my channel. I think its cause this project is gonna be about 20 minutes long, and my account has only 2.14k subscribers, so I'm afraid I won't be able to make enough noise if something goes wrong and I'll be screwed.

Given how hard it is now to get in contact with a real person at YouTube, I'm extra stressed about this, like thinking "if something bad happens, then that's it, I'm losing it all". FYI I dont aim to make money off of this video, I'm just doing it for fun.

So I just want to ask, what kind of stuff does the AI moderation usually flag? If I do get flagged for the music I use, how do I successfully appeal it?