I'm still having fun here.
R'lyeh (me) and Ermor (Jazzepi) are the biggest nations, holding about 90 provinces each. Pythium (Llamabeast, but now being subbed by Dr. P) is smaller, with only ~45 provinces, but he has had the nexus on for a couple of turns now, so he must have the biggest gem income of the three.
What's remarkable is that all the smaller nations have been wiped out. (well, T'ien Chi has one province and one fort left) I have never before seen an endgame where there weren't at least one or two smaller nations surviving tucked away in some corner of the map, trying to influence events a bit, or just trying not to be noticed.
But all of that is just fluff. In the end The Hunger Without Thought will have devoured all opposition, and the population of this world will live in eternall blissfull dreams.