Are my breasts tuberous? If they are, what type are they? (Photos)

Hello, I would like to know whether I have tuberous breast deformity or not, and if I do, what type do I have, as I understand that there is a scale based on severity. Do I have breast hypoplasia (or is this the same as tuberous breast?) I have heard the word “inframmary fold” mentioned, and I would like to know what mine is. I notice that my breasts seem to have a deep sideways shaped crease that slopes down either side into my armpit. Is this normal? I’ve noticed that the areola seems large in comparison to the size of the breast, and there doesn’t seem to be any “under boob”. There also seems to be not just a lack of lower pole fullness, but also, a lack of upper pole fullness. It’s quite a wide, flat expanse. They seem quite spread out. I have fairly broad shoulders, and quite a wide chest area, and I think my breasts look unusual . I would like some advice. Thank you. I am a 21, female. Weight approx. 66kg. 5ft 3”.