I’m sure this has been asked, but do either of these brands sell a full suit or even a pair of footed leggings for a size 36 inch waist 6’0 male? For reference, please see any of my posts.
Their bigger sizes should fit you well. I'm 6'2" 33 inch waist and fit with some room in the XXL. The 3XL should fit you. My only complaint is the arms fall a bit short on me.