If the new dungeon matches the pattern of the others, it's a safe assumption that there'll be some "natural" stuff as we first enter (in this case, looks like mostly Vilekin that have made the ruins their home) moving into the Voidsent destroyers of the civilization and the Ashkin dead of its former inhabitants. We'll see, though. Plenty from 2.00 and 2.1X to keep me busy fact checking.
In the meantime, Waiting for a Moon to Fall outs Golems as Soulkin so I'm going to keep them there for now and assume this classification is correct. Dullahan, though, is still tricky. Many Dullahan are said to be vengeful spirits who have "reclaimed" armor - implying that they are Ashkin (and many Dullahan in past Final Fantasies are undead), implying that there's more to them than "ancient golem."
A Random Sampling of Remaining Unknowns (Not Exhaustive)
- What are the true species of Golem? (Brown, Black Feet, Orange Glow) (Tan, Brown Feet, Green Hlow) (Yellow, Gray Feet, ??? Glow)
- What's the difference between Opo-opos and Galagos? Is the former the genus and the latter the species? Vice versa? Are galagos just a frequent name but neither label?
- That whole thing with the vultures/condors/buzzards is still in the air.
- Has anybody stumbled across the blue cobra that is not the glowing Allagan variant (Hygeia)?
- Is the snow goobbue a different species or the same old goobbue covered in snow?
- Ferne implied the genus name for Bogies and Revenants is Ghosts, so what are the Bhoots? ... Bhoots?
- Where can I find some red-eyed spriggans and how do they differ from yellow eyed spriggans?
- What are the other names for Gargoyles? Red seem to be the base.
- Are flans no longer called flans, but puddings?
- Are wights no longer called wights, but skeletons?
- As the territorial names imply, are snurbles gold now? And phurbles white?
- Are aurochs and buffalo different species? Which is which? (Yet to track these down in person to see the subtle color difference)
- Are Sprites and Elementals the same Class? What is this class? Are primals linked to this?