Nothing that isn't too informative for player use. Not yet anyways.
There are the Rhoduarians - Original Human Guys. Also includes random bits of other races. They're a major power.
There are the Britenaians - Human Guys that broke away from the Rhoduarians during the Territory Wars. Like the Rhoduarians, there are random groups from other races with them too. They're a major power.
There are the Elves that I explained up there in the other post. ^ The Thelenawen are a major power, while the Ecanominians only used to be one.
There are the Gnomes, they're a smaller Faction/Race/Nation, and they're somewhat similar to the Thelenawen - Minus the Warlike bits. Most of them respect, and wish to protect Nature in every way they can. (The more extreme of them joined the Ecanominians though)
However, due to their small size and numbers, they've needed to rely on Technology for survival.
Then there are the Dwarves - They're Dwarves. Very industrial and such. Beards and Ale. They're a major power.
Then there are the Goblins, which are actually a group of Goblins, Hobgoblins and Kobolds. (And some other races.) They aren't any more evil than anyone else, but after the Territory wars - Most of them keep to themselves, up in their Territory. A lot of them have joined other races, mostly the Humans - and some the Orcs.
Then there are the Orcs, they're quite industrious and very, very warlike. However, they aren't evil, stupid or anything like that. They're pretty intelligent, but also pretty obsessed with honour and all that. They're a major power, and no one but the Thelenawen really messes with them unless they have to. (And likewise, the Orcs don't mess with anyone else unless it'd be a fair fight - Or they started it first.)
There are a number of other, more minor races. Ogres and Trolls - Neither have a faction of their own. Most of them are still a part of tribes and such, out in frontier areas and the like. However, some of them have either joined the Goblins/Orcs - Or more 'civilized' ones have joined the Rhoduarians/Britenaians/Dwarves, but that's a pretty small number of them and most of those are servants, workers and the like. Most of them are pretty stupid.
There are also the Hill Giants, whom don't have a Faction of their own. They were pretty few in number during the age that Medieval took place during - and still are. However, another, larger group of them was found in the Midwestern Territories when they were first explored, and by now - Almost all of the Hill Giants are part of Rhoduaria. They're pretty peaceful, but they also aren't too bright. (Compared to everyone else at least.)