A1 only supports the two high school teams, the younger teams you see wearing the A1 uniforms are name only no financial support or organizational support. GV allows certain individuals to use the name, its also why you don't see a A1 team at every age group.
Basketball has become more popular sense the Thunder was formed, but Oklahoma has had players throughout the years. In 1982 OKla had a senior class of Wayman Tisdale, Mark Price, Steve Hale & Mayberry. from there we would see individuals that would come out the years following. For the first time there is multiple D1 players in each of the upcoming classes 2 players mentioned in this thread have already been offered by OU and another is about to be offered (2016). 2017 will be lead by Tre Young out of Norman 6'1" SG, then several kids out of the Tulsa area. 2018 holds a lot of potential players, training, guidance and exposure will be important to developing these kids talent.