Ron and Ayo are both NBA players for different reasons. Sam Vecenie of The Athletic who does as much research and prep for the Draft as anyone in the world said Harper was in his top-60 after the Maryland game. A lot of Draft scouting is off of potential so younger guys who aren't as good as Harper right now but have more potential will be ahead of him.
Ayo does everything well and is a good athlete. He scores from everywhere on the court, rebounds insanely well for a guard and can pass. He is a pretty good defender and has a good body. Like Harper, his three-point shot has gotten much much better. Still can't create his own three like other dudes, but inside the arc he can get to his shot whenever he wants.
Is there a real comparison for Harper's game? Draymond Green has excelled as an undersized 4 but he is a much better passer than Harper and more fluid. If he gets into the league, he would probably be used as a 3-and-D primarily (at first at least). Harper is athletic, but isn't fast and twitchy. He is insanely smart which you can't teach. He had a three in the second half where he set a ball-screen in transition and rolled off and lost his defender and got an open shot. That's not a set play, that's just him making things happen. He's as smart as any player in the country and using his IQ and actions to get open looks. He can't create space off the dribble like Geo but he has fixed his shot to the point where if he has an inch of space he is basically automatic. If you remember his freshman year, his shots would vary between line drives and high arced lollipops. Every shot looks the same now.
If there is a combine, I think he would get an invite cause that would answer a lot of questions. They do a body fat measurement and scouts would get to see his vert and agility drills. He will measure as a freak, that is no question. Pike once mentioned that he had like a 7-4, yes 7-4, wingspan and if you've ever looked at a picture of him, his hands are massive. If he does well athletically, he could be a late first round/early second round this draft. Plus his bloodlines help