I probably don't count as I am a trans-woman on HRT. But I have very perky full 36B's with all the mammary glands and ducts, large nipples, and large areolae. A lot of the time I don't wear a bra and just wear low cut tanks and I have a fair amount of cleavage. It helps being thin and small boned so they look bigger on me than maybe on others. But like a lot of us, I am not satisfied and want larger...perhaps as I am on HRT even longer...time will tell.
Since I have also transitioned 24/7, having them helps with my appearance even though I know boobs should NOT matter!