Quick sad update tonight....
I came home today, and noticed the 2nd dominant male multi dead near a group of shells that aren't occupied by any of the other fish. I had noticed he hadn't really been eating about a month ago and didn't really think anything of it.
I haven't noticed any different behavior with him besides him guarding his territory and swimming around like he always did. Either he starved to death or got attacked to death by the more dominant male. I don't know. I tested the water parameters and they were fine. No ammonia, no nitrite, and about 20 ppm nitrates.
Oh well. One of the dead multi's has one fry with one of the females which I noticed is still alive and quite large. The other male has fry with at least two of the other females which are doing well.