Interesting, lots of lists out there:
Illinois: Joliet Catholic (stadium.com), Nazareth (maxpreps.com)
Tennessee: Brentwood Academy is the best on both sites (although there are many more), so they must be pretty good
Connecticut: New Canaan (s), Greenwich (mp)—both are located in uber wealthy locales, so there’s that, just like the best programs in Ohio & Pennsylvania are Catholic school
Alabama: Hoover (s), Penix City (mp)—feeder systems for Auburn