While Lee's arms are no doubt complete, they are too "stubby", due to him being approximately 5'2.
I know he says he is 5'4" or some nonsense, but I am 6'1" tall on the dot, my friend is 5'5" (who competes) and when we met Priest, my friend towered over him.
In my opinion, Sergio Oliva's arms, after training with Jones for the 1972 Olympia in Essen, were the most complete arms we will ever see (forearms, bis and tris).