Richest rankings?

theos,owls,zete,tabard,theta - most wealthy
castle,zbt,tridelt - all also have insanely wealthy members but have a wider range in recent pcs.
hall,delt,apes - all somewhere in between, and more consistently wealthy.
aphi - debatably just below all of these

as for vibe -
from time to time you'll hear anecdotes for each. like insane multi k dues per sem, private jet flights on stories, an alumni who drops a few mil to renovate the house, one guy fronting the cost of a 35k downtown venue price, 4k/per bottles being brought out at parties, etc. these things always occur in this group. old story I heard is that one frat once dropped like 350k+ in one night to get French montana to play which is wild

then the "drop" between these orgs and then the rest of campus (sae, fiji, etc) is significant too. pretty much all of these groups consistently run informal events/meetups in the hamptons during summer, spring break together, have multiple guys double or triple paying in domus/chesnut, etc.

ZBT should be on the same level as aphi, but, other than that accurate