You haven't seen them because your son is young and you play in marginal tournaments. Summer Exposure, for example, used to be a pretty good tournament, but it has really gone downhill.

Blackwolf and VLC both have superior 2016 and 2017 teams to Madlax. For 2018, Blackwolf 2018 is just as good as Madlax and VLC isn't that far behind. Madlax 2019 is definitely the best in this area for 2019s. For 2020, it's a weak grade in the DMV and Madlax is better than VLC's team, but neither are that great. Blackwolf is starting up Middle School teams, so their teams will be strong in short time.

If you think Madlax is the only team fielding AA teams in the DMV, you are lack perspective.