Real deal here.

Girls ranks in no order in tiers.

Top: ZTA PM KAT ADPi AGD APhi AXiD AXO

The only thing you can objectively rank are chapter histories and the physical houses, which no one cares about really so there is no point. Every sorority has multiple events like date nights, mixers, socials, whatever you want to call them with top fraternities.

Guys in order in tiers

Group 1: KS PKA SX PGD KA SAE SNu

Most active on or off campus, all except SAE have great to at minimum very good houses, all except SNu are free from restrictions in house or at chapter events, all pull tech sororities exclusively.

Group 2: PDT, TKE, BTP, SPE, OX, CP, PKP

Some have house restrictions, some have history of trouble, some may have to fill social calendars with other campuses sororities, either way these are the next most active on or off campus and who actually get tech sororities to events a lot. There is a truck load of competition for sororities attention here so the fact they get so much, especially on the top of the group, is respectable.

Group 3: DX, OXi, AEPi, DU, ZBT, ChiPsi, PSK, PKT, DSP, ASP

These groups are fine, certainly active and get girls around but half of the time they aren't from tech. Also usually this is where membership starts to shrink and as a result upper class men like juniors or seniors rush them regularly and get in. Pretty sure these are the last groups with houses.

Group 4: anyone else

There are a lot of fraternities here and Greek participation is dropping over all, personally I wouldn't rush anyone else but if you do try and rush someone with a house at least and no less than 40 or 50 guys.