Alexxx face reality. Each of those other guys were missing things Coleman basically combines.
Wheeler had great arms but if you look at them while by his sides he never had quite the cuts or vascularity as Coleman. Not quite the peak, either, nor quite as big.
Schwarzenegger never had tris like that, nor the degree of cuts or size for his height.
Oliva never had that kind of detail, vascularity or biceps peak. Especially lacking detail on the inner upper arms.