I'd assume there's some place on the internet people are archiving custom moves, but I haven't seen any and I'm trying to unlock some.
Fox has a side-b called "Wolf Flash" which does wolf's side-B for Brawl.
One of Jigglypuff's rests makes her shoot upward and have a bigger hitbox as she uses it, but it's not as powerful. I've got both sings. One makes opponents turn around and one does damage, but the damaging one only makes PART of the sound waves do damage and it's not that much. And a multi-slap that slaps several times in a row really fast and she slides a bit. It does a few more damage, also.