None of these are bespoke jeans. The washes are custom. Not the cuts or the fabrics. Places like Jean Shop and 45rpm just let you pick out a pair of jeans and then tell them what to do to them.  Earnest Cut and Sew is the closest you'll get, but even that is just customization of, at best, a pattern. All you can do is pick out threads, rivets, and "limited edition denim," whatever that is.