Aldmeri Dominion(Summerset Isles and parts of or all of Valenwood),
Nordic Empire/whatever it would be called(Skyrim and Dunmer and Orc remnants, [Solstheim and Skyrim),
Resdayn(Dunmer residing in the wastelands. Mostly Ashlanders that survived and formed together to make a culture that cultivated the land. Does not trust the Temple anymore and rejects the Dunmer on Solstheim. Mostly a tribal culture clinging to its past greatness and looks to the times when they were the Chimer for inspiration. Helseth(or whoever is king when the Dunmer experience the Red Year and get invaded) and his and other major houses possibly having gone to Solstheim.
Highrock+Hammerfell(they showed signs of cooperation in ousting the Orcs),
Elsweyr(a curve ball of an alliance between rebel Bosmer fleeing the Thalmor and joining the Khajiit)
Mede Empire(Parts or all of Cyrodiil and maybe parts of Elsewyr and is allies with the Khajiits)
Mostly just throwing out wild guesses.
Seem interesting? Seem likely? Lol...I feel the weight of the Lore masters bearing down on me before I even post this.