RTF is a global modification that replaces all towns in the game.

Are there any other examples?

Well, I don't know all of them, but for example, centaurs. In mythology, they are half-human, half-horse, but in Ashan, they are sometimes half-human, half-zebra/antelope (in Heroes of Might and Magic VI and VII), and there may be other types of centaurs. In Heroes of Might and Magic V, centaurs are half-human, half-hellish horses.

Added 3 minutes later
Or, for example, rakshasas. In mythology, they are spirits, but in Ashan, they are beastmen.