Neat! I especially like the third version. How did you manage to get a realistic-looking heightmap for your mountains? I never got the hang of that.

The final handdrawn one is very nice too. One thing I find a bit disturbing, though, is the big white blotches for the cities --- nevermind the fact that this being a fantasy world, a 20 miles (I guess the scale is in miles) while city is a bit too big imho --- you could perhaps try to draw some buildings to match the stylised feel?

Very nice work though, I'd rep you if I could! Trying to do not two, but four different styles on the same map is quite courageous!