8 MOM ones, Haida Gwaii, Gaea...
And two I have never mentioned/released
Mesothalassa "Scourge of the Deep", which is a water nation with an emphasis on golem construction and death magic. The name of the nation comes from a "zone" in the mmorpg Dark Age of Camelot, and most of the units use names from monsters in that zone.
Midgard "Dark Age of Camelot", which is a nation based on the playable races/classes in the Midgard faction of the game Dark Age of Camelot.
So actually I have done 12 nations. The MOM ones lack descriptions. I miscounted my banners when I was counting how many I had done, that is why I said 11.