I asked a few days ago on discord if demihumans are real monstergirls, the answer was overwhelmingly yes, but i didnt have room among the current monster types in the game to include them without abstracting, so i createda new type "Fomorian".
Fomors come from celtic mythology, they are deformed humanoids that come from a land beneath the waves, but they are also very similar to the gods and a few of them were well respected and ruled the land at times.
That may tie into the origins of my fomorians, if you like lore type stuff you might enojy searching for it.
Here i have just for races of fomorians,
Goblin - A crafty little race of monster that are every much as resourceful as humans.
Elf - A fairy-like race, they look similar to humans but have bodily functions like fairies.
Giant - A large and tall race that commands lots of power and are long lived.
Dwarf - stout dark skinned lolis with hammers.
Here i have concepts for unconventional monster girls,
Wereamoeba - a girl that under the right conditions becomes a self repairing slime
Iron golem - a golem that appears to be a powerful armored suit but contains a soft vulnerable core
Scryll - a corpse that screams as adventureres approach, belching out a ghastly apparition that brings them to doom.
they are not as fleshed out as the fomoarians but with a few adjustments will be made a bit more fitting.