From old pix in Golf Has Never Failed Me, I have come to the possibly wrong conclusion that it depends somewhat on which office was buiding the course for him. In particular, the Chicago crew seems to have a more modern look than the NE crew.
We also have to recall that in addition to thousands of construction personell, dozens of foremen and draftsmen, his career spanned about 50 years and he might have evolved somewhat. At the very least, you might ask about early, late, and perhaps "unique" Ross bunkers, as supposedly happened at Seminole.