Some players play bigger than their size like Draymond and Thompson, so until Okekes shows he can play pf at 6'7" verse men. I am going to list him as a SF.
Muggsy Bogues played great for his size, but it does not mean that other 5'3" 134lbs players will play at the same level or bigger than their size suggest - until they prove it. All I am saying is, he needs to prove what position he can be successful at or what position he can defend at before we say he is a NBA PF at 6'7".