Insurance Sales magazine, and a sister publication in the insurance field, Rough Notes magazine, were relatively low-paying markets, but I could count on them to buy many of my business-related gags after they had been rejected by all the other publications. Both of them printed many cartoons of mine. Insurance Sales folded years ago, and I'm not sure if Rough Notes is still around.
The Enquirer, the much-maligned supermarket tabloid, was surprisingly generous in the rate it paid for cartoons. It was said that the owner, Generoso Pope, believed in rewarding his reporters and contributors well. Mr. Pope died many years ago, and as far as I know the Enquirer doesn't publish cartoons anymore, but I'll keep checking it at the cashier.
A couple of times when I was in the neighborhood of the Enquirer editorial offices in Lantana, Florida, I stopped in to say hello to the cartoon editor. I'm pretty sure that the offices are now in Boca Raton.