Races of the Source vs the First and those unique to each

[DaBigDorf]

On both that we know of:

Hyur/Humes
Elezen/Elves
Lalafell/Dwarves
Roegadyn/Galdjent
Miqo'te/Mystel
Hrothgar/Ronso
Viera/Viis
Kobolds/Mord
Amal'jaa/??? (i forget the name, the only time you see them is the Crystarium where they are raising the Amaro)
Sahagin/Ondo
Moogles

Source only:

Sylphs
Ixal
Garleans
Lupin
Namazu
Kojin
Ananta
Qiqirn
Mamool Ja

First only:

Pixies
Nu Mou
Fuath

interesting that the Fae Folk appear to be unique to the First

questionable: Are the Hobgoblins of the First what Goblins of the source would look like without their masks? (my guess is yes as the Hobgoblins look like the classic FF enemy "Goblin")

[MrThinker]

/snip
Source only:

Sylphs
Ixal
Garleans
Lupin
Namazu
Kojin
Ananta
Qiqirn
Mamool Ja
/snip

Through a quest (main or side I dont remember) in Rak'tika, we actually know that namazu did indeed live on the First. The image of one is found on a ronkan coin that we find. That they can't be found simply points to them becoming extinct in the wake of the Flood.

Also the Amal'jaa equivalent are called the Zun.

[Nalien]

Source only:

Namazu

As I recall, there was a carving of a Namazu in one of the Rak'tika quests, implying they were at least around during the days of the Ronkan Empire. They were simply wiped out by the present.

interesting that the Fae Folk appear to be unique to the First

Likewise, it would seem Fae did exist on the Source at one point, given Bismarck is a Fae on the First, and a creature of mythology for the Vanu Vanu (who are also Source only, along with the Gnath), implying he at one point existed on the Source to inspire that mythology. The Sea of Clouds possibly being the result of something similar to what we saw him do in Tempest.

EDIT: Perhaps also worth noting, there doesn't seem to be a Sea of Clouds or Churning Mists on the First, Sohm Al is entirely absent despite being fairly inland from the Flood. Entirely possible they fell during the Flood of course, but to me that does raise questions regarding the idea that the Floating Continent existed since before the First Calamity, and was subsequently broken up by Calamities. The Norvrandt map has roads, bridges even, leading towards what would be Idyllshire, so it's not like that region wasn't explored in their history, and I think a floating mountain would draw attention, more so with there being no Dragons guarding it on the First. The only floating islands we do see on the First are "man" made (Vauthry raising Mt Gulg) and, interestingly enough, Pixie related with Lyhe Mheg, implying that Pixies do have a habit for making floating islands, perhaps lending some weight to the idea that Bismarck (also a Fae) created the Sea of Clouds?

[Noitems]

perhaps lending some weight to the idea that Bismarck (also a Fae) created the Sea of Clouds?

Long, long ago, in a time when not a single cloud marred the blue vastness of the sky, a stark white calf was born to a pod of sea-dwelling whales. The pale-hued Bismarck endured endless cruelty from his grey-skinned siblings, until one day they suffered the "abomination" to live no more. It is said that the gods wept at his piteous fate, and when his tortured soul ascended to the heavens they returned the white whale to life. His rebirth blessed by divine grace, Bismarck swam through the air, the whale's breath begetting billowing clouds until the sky was filled with a sea of tranquil mist. Master and creator of this peaceful domain, he thence became known as the Lord of the Mists.Compassionate and gentle, Bismarck raised entire islands into the heavens to provide sanctuary for those who had suffered similar torments. The Vanu Vanu mark this occasion in their history as the moment when the Sea of Clouds became their home.

I mean we know Bismarck was the one who created the Sea of Clouds, so this does add more to the concept of our Bismarck being a Fae and how it ties itself back to the First.

[JeanneOrnitier]

It's possible that fae still exist on the Source somewhere since there's at least three continents we have yet to explore; at the bare minimum Bismarck is/was around to inspire his primal version that the Vanu Vanu worship. But on the other hand it's pretty safe to say the Source's races missing on the First are extinct or never existed at all, since we've been pretty much everywhere that isn't the Empty.

[ObsidianFire]

I think too much of the 1st Shard has been destroyed to say if the races we don't see on the 1st Shard weren't actually there at some point in time. Other then races like the Ixal (which are Allagan creations) it's entirely possible they migrated to different parts of the 1st Shard and were simply swallowed up by the Flood.

We've already seen that Roegayden and Au Ra are in the location of Corethas (instead of Elezen), while the Kobald and Lalafel swapped places. There's also primarily Viera in the place the Black Shroud is instead of Elezen. And the Elezen were in the 1st Shard's verions of Mor Dhona. So there's already a precedent for different races settling in different locations on the 1st Shard compared to the Source.

[Brightamethyst]

I think too much of the 1st Shard has been destroyed to say if the races we don't see on the 1st Shard weren't actually there at some point in time. Other then races like the Ixal (which are Allagan creations) it's entirely possible they migrated to different parts of the 1st Shard and were simply swallowed up by the Flood.

Pretty much this. We only know what we see. There could very well be First versions of goblins, ananta, vanu vanu, etc, and we just don't know about it because they were all gone long before we ever got there.

[Erendis]

So Moogles are the only race that got same name on the Source and the First? Does this mean anything?

[Mansion]

So Moogles are the only race that got same name on the Source and the First? Does this mean anything?

They are even older than the Ascians. They are the true cosmogony.

[NessaWyvern]

They are even older than the Ascians. They are the true cosmogony.

If you go by another Final Fantasy game, moogles exist in the rift between worlds, so perhaps they came from the rift after the worlds were separated.