Can't figure out what I am 2b, 2c or 3a.. Help?

I have long layers right now due to seriously needing a haircut. I like to have short layers up top to create volume so mu hair doesnt lay so flat. I usually have some frizz. My curls start at my roots. My bottom layer seems to have more defined curls than the rest. It usually takes some time to straighten or curl it (although I dont do that anymore) I have gone natural and heat free for 10 months now. Yay! But I still don't know what my curl type is. Noo. Help?