https://iawrestle.com/2022/03/24/enrollment-figures-for-classifications-for-2022-2023-season/
Still waiting to see this on the IHSAA as well.
Pending any changes:
2022-23 Boys Basketball
4A - Top 48
Biggest - Valley
Smallest - DCG
3A - Next 64
Biggest - W. Dubq
Smallest - Williamsburg
2A...