most up and coming frat and sorority

Like newly colonized ones or ones that have been here for a while? If sae, aepi, sig chi, kappa sig, sig nu, phi delt are considered to be already established...
pike, zbt, ato, and fiji are doing pretty well but theyre going to benefit more from beta getting kicked off

If theta, kappa, tdelt, pi phi, chi o, kd are established, then zta and axo (kinda). There haven't been any new ones besides them

for guys its signu or kappa sig
for girls its pi phi

With Beta gone, Kappa Sig will be new top tier. They are the most up and coming frat. Phi Delt has done well in the past few years, also.

Pi Phi would be the most up and coming sorority, but there isn't really a spot above them to fill. With Chi O falling to the bottom and all of the KD drama, Zeta is rising to upper mid tier and Alpha Chi will probably be mid tier.