Zach Prince, Jamal Geathers, Danny Cates, Jugal Dalal, Andrew Autenzio, Seth Kulasekera (sp?), Kira Campbell, et al...in no particular order.
There are many in different age groups and both sexes.... You will need to refine the selection process. I personally do not think you can compare across age groups without understanding the competition within the age group.
For example U15 boys you can pretty much say there are 3 teams, U16 boys on the other hand there are 6 strong teams, thus a player that stands out in U16 may be more deserving than one at U15. By the way I have no qualms with your picks all 3 are deserving of praise.