Sex between the Races Lore?

[Bhearil]

The Wind-up Mithra is probably a meta joke and theres no real relation between FF11 and FF14 but is still possible that the current races evolved from those, like humans from hominids (and kinda salty that Sun Keepers lack their canon feral claws on their depictionm at least Moon Keepers got their fangs). The southern island parts was seemingly datamined from 2.5 so its probably the (open) canon they have as origin

[LineageRazor]

The Wind-up Mithra is probably a meta joke

On the other hand, we know for certain that there's some kind of language drift going on. All the Shards likely had the same name for Mi'qote immediately after the Sundering, and yet in today's world, they are called Mi'qote on the Source, and Mystel on the First.

It's not impossible that that original name was Mithra.

Still meta, of course, but it could be literally true, as well.