All cutscenes.
Sans has none.
For Asgore, you need to use the Gouki skin. His ultimate, fire 5, becomes akuma's signature attack, raging demon.
Glitchtale Frisk has none.
For Glitchtale Gaster, simply use your ultimate.
For X Frisk, your counter, overwrite 3, overwrite 4 and enraged overwrite 4 are all cutscenes.
For Cross, knives 2. For X Chara, Overwrite 2 and 3.
Story shift Chara has none.
For Fun gang, Susie 2 and all 3 of the final stands.