Believe it or not, a couple of others just came to mind:

Kiwi International - This outfit rose from the ashes of Eastern, with virtually all of the cockpit and cabin crews being oldtimers from that defunct airline. They flew all coach configured 727's between EWR and a couple of destinations including MDW, SJU (hence the "International" in the name), and PBI. The aircraft interiors were distinguished by an enormous exit row, for they had simply removed the row in front of the standard exit row without putting anything in between. That was their equivalent of FC and it was almost always available when I asked for it. I used it extensively out to MDW to hook up with Southwest to run to the Lower Midwest and Mid South(eg. SDF, BNA, BHM). Generous connection time was always dialed in because this was an airline whose flights got more and more delayed as the day wore on, you could count on a minimum of 2 hours on the evening flights, and eventually I could no longer use them for connections because of that. The last time that I flew them was out of PBI and they were stacked over EWR for a while when they announced that they would need to put down in PHL for refueling. At that stage, I grabbed my suitcase from the overhead, got off the plane, and called my brother-in-law who lives in Philly to come get me and take me to my crashpad in NJ. I never flew with them again because they went belly-up shortly thereafter.

Christman Air - A commuter line that I got maybe 20 years ago once from PIT to CAK (is that the right designator for Akron-Canton, OH?). I don't remember much about them except that they were on time.

There probably are others that will come to mind from time to time and I will chime in again here when they do.