Wallace will most likely go top 10.
I have a hard time believing he falls past Washington/Orlando/Utah as all 3 could talk themselves into needing a PG. Since Wallace is considered more "NBA ready" than most prospects, those 3 teams may value him more because all 3 should want to make the playoffs next season.
Is a team really going to value JHS over Wallace? I still think Bufkin could jump up way higher than people think, and I could potentially see him surpassing Wallace if a team really believes in him, but I would still bet on Wallace going before him.
Hard to see Orlando taking Black with his shooting issues. Maybe that isnt a deterrent for Washington though, and they take Black ahead of Washington.
Main scenario I see Wallace falling out of the top 10 is if Utah moves up to the top 4. Washington takes Black. Magic opt to commit to Fultz as a full-time PG and take Hawkins to provide more shooting in the backcourt.