Without context in the pictures, such as their work or tack, it's near impossible to identify the horses. The Criollo looks exactly like my purebred Tennessee Walker, the picture should show the horse in Chilean/Argentinian tack, the 'quarterhorse' is not of a classic working QH with the nice big hips, looks like it's one of the TB/QH crosses, several others could be a saddlebred or standardbred. The appaloosa isn't the classic coat. I actually did type in Mongolian, why does that one require 'horse' in the answer? Not an effective quiz for horse persons, of which I am one.