Organizations after undergrad that are like fraternities in terms of brotherhood?

[DrPhil]

The OP seems to have only wanted a definitive "yes" and list of the specific fraternities.

Contacting Greek Life is too much research for the OP, as is searching Google and contacting some fraternities.

To go back to naraht's question about NPHC, a graduated student interested in the NPHC should not contact the Greek Life office of that school. Most Greek Life offices won't know. If they offer assistance at all, the most they will do is give the person the contact info for the collegiate chapter(s), NHQ(s), or possibly the alumnae/alumni/graduate chapter(s). The person can and should access that info without the Greek Life office.