White Zetsu, Black Zetsu, Tobi, Akatsuki Obito, Hiruko, Momoshiki, Kinshiki, Mitsuki, Shin, Anko, Kurenai, Shizune, Torune, Kurotsuchi, Chojuro, Mangetsu, Kinkaku, Hagoromo, Indra, Asura, Toneri, and Hamura. All of those should have been playable already but nope CC2 is lazy and incompetent as usual.
But, I'd seriously change every combat list for majority of the playable characters. Most of them have been given the same moveset altered by small changes; Tsunade, in particular, sucks. Basic punch, kick, punch... Where is the power of the Fifth Hokage? Grrrrrr.