Where does Cowboy Bob Orton fit into this?
I'm sure he did some work as a main eventer in some of the smaller territories back in the day. Not sure how to rank him in the NWA/Mid Atlantic area (1983 specifically with Slater/Race/Flair, etc), or his WWF time, where he main evented against Backlund in the usual heel challenger fashion for a few shows. Post-84 he was never truly top of the card, I don't think.
No question on the talent end of the spectrum, but he gives me more of a "supporting player" vibe for the most part.