this is my list based on character usage at AI:
5 K', Raiden(w/Dropkicks)
4 Kyo, Elisabeth, Kula, Andy, Iori
3 Shen, Takuma, Yuri, Robert,Kim
2 Chin, Benimaru, Terry,Mature,Mai,Raiden (NO Dropkicks)
1 Duolon, Goro, Clark,King, Ash,Leona
0 Joe, Athena, Ralf, Ryo,Vice, Kensou,Maxima,Hwa