kkg, aphi, dg

Nationally, these 3 are the strongest/best houses overall and are USUALLY top or mid-tier at most schools.

PIPHI, THETA, are strong but not top or mid-tier as often across the country as the Super 3.

CHIO, DDD, ZETA, GPB are strong but top less often than the above.

AXO, KD, ADPi, AGD are top only on occasion and are slightly more regional.

AXD is never top and not nearly in the same category as the above.

SK, PHIMU, AEPHI, SDT, DZ, DPE, AOPI are even weaker than AXD.

SSS, PSS, ASA, TPA are just totally unknown, generally speaking.

Did I forget any??