Honestly how many true AA teams are playing in each of these grade divisions. Just because you play AA doesn't mean you are AA. I would contend at 2024, 2023, 2022 there are not more than 10 AA teams at each. I just have some familiarity with those divisions as I have seen those teams when my boys play. Thus all the blowouts in pool play.
At 2022 I will give you 4 from LI, 3 from MD, 1 from Philly, 1 from New England and 1 from Canada