Here's the thing about Kris Dunn. ACC is 9-1 in NCAA tourney. UNC has 6 or 7 players who will get NBA looks. They had to triple team him.
There are HS/AAU coaches who put in 40 hour+ jobs then 40+ hours more working with their kids. Driven to help, get little recognition.
Harrison twins were mentioned as NBA lottery picks in HS. James Michael McAdoo, too. Don't listen to HS rankings.
EYBL is a great circuit (if you get minutes). But tons of non-shoe teams have college interest, too.