Do you even know FotNS? Mukyumukyumukyumukyu could be just as much a parody of Atatatatatata. The multiple punching thing also originated with FotNS long before Jojo.
The Alice's slurring reminds me a lot of "HIDEBU!" as well, so put my vote in for a FotNS parody.
JoJo's repeat attacks are by Stands (since Hamon and Spin have a different fighting style), and - to my understanding - there's only one instance in which a character themselves does a repeat attack (the road roller scene in Part 3).
On the other hand, FotNS has attacks which are directly carried out by the characters.
In this scene, Patchouli is doing an attack with her braids and there's no Stand in sight, so I think it should be FotNS rather than JoJo.