I don't remember how I first ran across it, but I love the man who models for Glute God apparel. With that name, the focus over 90% of the time of course is his world-class rump in razor thin, ass-hugging material. Today I found the guy's only fans, where he goes by "musclebuttguy", but I would not recommend if you're looking for anything x-rated. No clothes-free cock, and no hole.
I haven't been a gym-goer in many years. Are skin-hugging clothes on guys a rarity, or predominantly only worn in gay friendly places, or has a trend turned toward more men showing off their hard work so others will stare and admire them?