MCWyman was a favorite of mine. He did several Namor comics after John Byrne between Jae Lee and Geof Isherwood. He was the regular penciler in Thor for awhile. MCWyman also did the Atlantis Rising specials.
But even Bill Everett draw him like a tank on more than one occasion.
My Namor is unusually big but the difference between him and Mangog in my story is the same one between him and the Hulk in most drawings.
And then there are these iconic fights were Namor and Hulk physiques are extremely similar: