Based on several tweets, Jaylen Johnson also had a good showing. Think Ejim's rebounding ability, Royce's passing, and Niang's ability to finish around the rim. Now think a high school senior version of those abilities. A poor high school.
Let me clarify: Ejim's rebounding ability in that he rebounds better than his size and has good timing and position. Royce's passing in that he is 6'9" and makes passes that lead to easy scores. Most guys his size lack his court vision. Niang's ability to finish in that his moves are unorthodox, but the ball goes in. Not as accurate as Georges, but who is?
It sounds like he has a unique skillset that is still developing. I've quit worrying about Vaughn and put Johnson at the top of my wish list.