No retrograde alopecia. And from those photos, you look like more like a NW2 and your density is excellent. You have fine hair so it's going to show some scalp. It's amazing how curly hair will trick you into believing it's super thick but when it's straight it looks thinner. I used to work with this girl who would straighten her hair and it would look thin. But when she let it go curly naturally, her hair looked so thick you could never see scalp.