What is my hairtype? It seems caught between 2B, 2C, and 3B.

I'm having trouble identifying my hairtype. It's thick and layered, and multi-ethnic, and I do have a gentle relaxer (mizani) in it that I'm not willing to eliminate. If I wash it in the morning and scrunch it it's closer to 2c, but other wise it's comprised of beachy waves that don't have much curl. How should I best take care of it? Also, is there a way to retain the curls overnight? Pineappling it does not work, at all. Product recommendations would be appreciated as well. I love my hair, I just want it to love me back!