It's only been 2.5 weeks, but the Ancestry results are in! Unfortunately, not a lot to report just yet.

No close familial matches. There is a paternal first cousin in database I’m not matching with, so that confirms what I already knew. My mother is a ho. A lying ho, at that. 

I did get 3 first or second cousins that popped with a name I recognize - Amato. It’s a family in the area, nice folks. I went to school with one, though I didn’t know him well. I’ve reached out to him and hopefully he can help direct me to someone in the family who can help me sort it out.
Interestingly, I remember my mother mentioning repeatedly when I was young that she went to school with the Amatos, and seemed to fondly remember them. Down this rabbit hole I go.

Still waiting for Ronnie's daughter's results. She is no longer communicating, unfortunately. She seemed cool, but I'm well aware of the fact that I'm a terrible judge of character.

It's been mentioned that perhaps my mother doesn't know who the father is. I know that both her parents and all of her siblings are/were alcoholics. Many of her friends from before I was born as well as my "father" are also. She won't allow a drop of alcohol on her property, and I suspect she may be a recovered alcoholic. She would be far too proud to ever admit to such a thing and risk such a hit to her reputation, so I can't say with certainty.

Perhaps she doesn't know, and her getting knocked up with me is the reason she's now sober. Perhaps she's convinced herself it was my father all along and is too far removed from the truth to even recognize it now. Mental soundness is not common in her family....