I took a shot at 2A based on one of the iterations posted here:
REGION: Whiting, Andrean, Boone Grove, Bowman Academy, Wheeler, Rensselaer Central, North Newton, Delphi
NORTH CENTRAL: Bremen, LaVille, Rochester, Pioneer, Lewis Cass, Manchester, Wabash, Fairfield
FORT WAYNE: Prairie Heights, Central Noble, Eastside, FW Luers, Woodlan, Whitko, Eastbrook, Bluffton
MUNCIE-ISH: Eastern, Blackford, Lapel, Alexandria, Elwood, Tipton, Frankton, Winchester
EAST CENTRAL: Centerville, Northeastern, Union County, Shenandoah, Triton Central, Eastern Hancock, Scecina, Heritage Christian
WEST CENTRAL: South Vermillion, Speedway, Western Boone, Southmont, Cascade, North Putnam, Howe, Seeger
SOUTHWEST: Evansville Mater Dei, North Posey, Paoli, Crawford County, South Spencer, North Knox, Linton-Stockton, Forest Park
SOUTHEAST: Monrovia, Mitchell, Eastern Pekin, Clarksville, Tell City, Switzerland County, Providance, Milan
Sorry for using geographic labels rather than the numbers.
Please nobody jump my case if there is some stupid error here. I was bored and started trying to piece things together and a ton can change if even 1 or 2 teams shift classes. With these 64, the most compelling decisions seemed to be which team gets pulled into the Region sectional from outside of that area (I chose Delphi over Bremen/LaVille) and which central team gets pulled to go south for sectionals (I chose Monrovia over Trition Central). If you were to choose differently for either of those, you could draw a very different looking map.