I'm guessing this list is old or fake, I found it on a french site..
S Class-Choi,Saisyu,Geese, Jhun
A Class-Robert, Iori,Daimon, Athena, O.Yashiro,Terry, King,Chris,Andy,K'
B Class-Vanessa, Ryo, Vice, Kyo, Whip, Takuma, Yamazaki,Joe, Kim, Yashiro,Yuri,O.Rugal,Ralf,Clark, Leona, Billy, Chin, O.Chris,Shingo.
C Class-Angel, May Lee,Ramon, Chang,Mai,Kula,Shermie, Blue Mary,Kusanagi.
D Class-Seth, O. Shermie, Mature
But looking at this list....How is Mature and Mai in this game? I barely know anything about Neowave, doesn't look bad though.