Unrecognized/Underground GLOs on your campus

[tallgreekalum]

I know we've talked about unrecognized/underground chapters or former chapters,but it just raised lots of questions in my mind. I know my chapter ( UMass, ADPhi) lost school recognition but not our ADPhi charter, for three years in the late 80s-early 90s, basically, over failure to file paperwork. I am wondering these things:
Does your school have any of the following groups and who/what they are.
Former chapter of a inter/national that went local?
Chapter of an inter/national that the school has derecognized but still operates
Former chapter that the inter/national AND the school have de-recognized that have still continued to operate. Have they kept their name, a related nickname, or an unrelated name? Are they upfront about their status to rushees, etc.? How long have they been doing this? Are they successful vis a vis the rest of campus? Thanks.