It's a bit redundant, but they've also started to rank the styles for each character.
VSion H > F > C
Mecha C > H > F
Shiki Tohno H > C > F
Nero F > H > C
Nanaya C > F > H
Kohaku H > C > F
Miyako F > C > H
Warc C > F > H
Maids F > C > H
Arcueid F > H > C
White Ren F > C > H
Hisui C > H > F
Ciel C > H > F
Kouma F > C > H
Aoko F > C > H
Ries F > H > C
Satsuki C > H > F
VAkiha F > H > C
Sion F > C > H
Roa H > F > C
Akiha C > F > H
Wara C > F > H
Ren H > F > C
The consensus seems to be that for Akiha, Crescent is the best style, though Half and Full are better off against certain matchups. To theory fight a bit more, Crescent also seems to be her best style from videos too. Out of all the notable MBAC Akiha players(Yukinose, GO1, Kirito, Yuu, Tetsu, t-ru), Yukinose is the only one that uses F, all the other players use C/H, and GO1 switched to VSion