You want to create and divide characters by style? Frankly, I don’t think that any game hence fort will feature styles. I think they’ll split the combat functions across the controller like they did with DMC.
Probably wouldn't be a bad thing to have a larger cast of regular characters in the vein of how the DMC anime.
So people who might help Dante out in his shop like Morrison from the anime. Or maybe rival Demon Hunters, who maybe not as strong as Dante physically but in the ways of hunting demons can give him a run for his money.
Possibly best to expand the world building. DMC always felt a bit small in that regard.
Since DMC is an action title you would think of a fighting style for the characters. Usually you would create a character to fullfill a function in the world/story. DMC is about fighting the supernatural to avenge people/seek justice so i guess creating hunters would help.
I had an idea for a former Order knight who quit but not before having to live the rest of her life with the effects of the Ascension ceremony.
I have an idea for her melee weapon and firearm but have no clue what her "Devil Trigger" appearance will be.