There could be more unlocked, but here’s the various fighting styles of base characters which you can use to create your custom characters.
I like how the custom characters look as good as the base characters, and you can’t tell them apart visually. You don’t get that in many games.
However, I hope the the fighting styles can be made to adapt to gender styles. Eg. while Taki is a female, her female attributes should disappear when I apply it to a male character.
To illustrate, here’s my Ninja Gaiden character, whom I applied Taki’s fighting styles. Most of it turns out perfect, except for one scene when my Ryu Hayabusa drops in defeat.