I wonder how much being a coach in USA basketball factors into this ranking. Dawn is obviously the coach of the women's national team, but I think she also coached one of the U-18 or U-19 teams. A similar situation for Jeff Walz, who was recently the head coach of U-18. Even Kelly Graves was a U-19 coach.
I think that when good players get exposed to these coaches in the USA Basketball program, they feel more comfortable committing to the respective programs. And that shows up as being a good "recruiting" coach.