Yates had no peak, but that shape fit his body. Look at the totality. An artist could try to shop better biceps on Dorian but I doubt the whole would look much better. Same with the quads, put more sweep there and see what happens. Try it.
And as Earl said,
and arguably the best poser
He was an underrated poser, never mentioned as great in this respect, because he didn't do any queer stuff, just disciplined all the time, hitting the poses in a manner that fit his body. No excessive time to hit a pose, no stumbling around, no caressing of the ass, hams or abs

Some have said Dorian had bad genes in comparison to other top pros. Total nonsense.