So it turns out that nobody reported Crunchii - Music Extensions on Youtube. Apparently ATLUS terminated the channel because of Persona music extensions from the newest Persona games.
Luckly Crunchii re-uploaded the Pokemon Super Mystery Dungeon OST extension on his gaming channel, but he's going to take a year-long break from music extensions.
You can read more about it in the link below, in Crunchii himself confirmed it.
https://www.reddit.com/r/splatoon/comments/3n19w3/rip_crunchii_music_extensions/
I'm still fixing the Smash Bros. 4 section. Parts A to P are finished.