I guess Sylvia could technically count as futa. We're not at the point of the Crimson Demon Village yet, and I haven't quite decided what Sylvia's encounters are going to be like, but I'm thinking she might have multiple variations for her scenes (futa/female/etc.), given that her whole point is being a Chimera and being able to shift her appearance at will.
Definitely would like to hear any preferences you guys have here. We're still a long way away from the end of Chapter 2 after all