Mutant rulers,they can create subspecies if they wish as I recall.
From the scarred lands comes the tar dragon -Draco tarus barfling they are approximately made of the same stuff as their breath weapon and eat it along with their victims! They shoot out a thick line of tar as their breath weapon.
Wrack dragons-sea wrack-Draco wetus wrathus
Forest wrack-Draco woodus wrathus
Magma wrack dragon-Draco magmus wrathus
These dragons are from the scarred lands and represent the wrath of spoiled nature!
Hmmm...Yuan-ti-snakus homomorph these were originally humans that over time became snakelike and have 3 subspecies,pure-bloods,abominations & half bloods! These are all essential the same creatures though.
Hmmm...
You could use homoserpens as the species name, partnered with whatever it was we came up with earlier for magically created creatures.
Or you could use Homoserpens as a genus name, with subtypes with their own species names, like “major” for the purebloods, “nefas” for the abominations, and “hybrida” for the half-bloods.