One of the stranger ones that is seldom mentioned is "savage fantasy", something of the more traditional sword and sorcery variety that is grounded more in the nature of the world itself being mythic and massive, with the characters being comparatively small in the scheme of things. The narrative is more primal and earthly, with the mysteries and mysticism, the magic itself, not being elaborated upon or explained, rather a known factor but too ethereal and distant for most to master. Many monsters and creatures themselves are based upon those living beasts historic yet drummed up to exceptional levels of power and scale, almost a sort of Stone Age fantasy but bearing obvious tropes toward traditional fantasy - noble savages, heroic barbarians, useless peasants, mad wizards and the like.

The entire genre with an overtone of "wolves at the door" niche is not often found or paid much mind. It tends to be gritty and simple individually, really only larger in its scope due to the seemingly boundless nature of the world; the exact type of thing a "sandbox narrative" aims to be. Unfortunately, given high fantasy or its derivatives et all tend to be much more popular, especially from an individual character standpoint - more interesting to write for when each person seeks different outcomes and different forms of power - this subset is almost never seen.