Showing Only Default Skins

Basically everybody is steve and alex, Ive updated my mojang tried on several versions and even re-installed minecraft. Ive found a few people maybe 2-3 out of thousands that ive seen where I can see their skin. I think its because ive met them before and their skin is saved? eitherway I used to be able to see my skin and then I changed It and I went steve too