Beast Tribes of Eorzea discussion (Potential Spoilers)

[Cilia]

• How would you order each tribe based on their level of advancement? (particularly technological advancement, or cultural observations/interactions with the humanoid races)
• What is the origin of each tribe's respective primal, if any?
• If applicable; Where does each tribe originate, to our knowledge?

In order, from a purely technological standpoint:

Tech Advancement:
1. Goblins
2. Ixal
3. Kobolds
4. Gnath (Vath)
... the rest don't use much more than basic smithing techniques, if that.

Primal Origins:
1. Ifrit (Amal'jaa): unknown. Presumably some kind of desert spirit, I think?
2. Titan (Kobolds): unknown. Likely a father figure from myth, based on his quotes and personality.
3. Garuda (Ixal): From the Final Fantasy Wiki: "Garuda [is] the Primal worshiped by the Ixal, and is known as the Empress of Birds. It is said that in past ages, Garuda slew the malevolent Lord of Snakes to end his foul attempt to bind the world's creatures to the earth. Though birds became free to roam the skies, Garuda was terribly wounded by the battle and was forced to feast upon the snake's carcass to recover her energies, said to have since then a taste for the flesh of land-bound mortals."
4. Good King Moggle Mog XII (Moogles): based on a chieftain that led some moogles away from the Churning Mists in time immemorial.
5. Leviathan (Sahagin): unknown. Seems to be a manifestation of their rage, but that's all we have.
6. Ramuh (Sylphs): based on "the old man in the wood," a forest-dwelling hermit sage. (Harsh behavior is likely due to the summoning process, which tends to corrupt the primal to its worst possible interpretation - see "Good King Moggle Mog XII is essentially a genocidal tyrant." That said, easily the most agreeable non-channeled primal.)
7. Ravana (Gnath): based on a great warrior of myth, I believe. Story is somewhat elaborated on in the quest to unlock Ravana EX. (Popular hypothesis is that he's based on Phantom Ray, the first boss of the Fractal Continuum, but beyond the two sharing a skeleton there's nothing hinting at this.)
8. Bismarck (Vanu Vanu): based on a being from Vanu Vanu creation myth. Bismarck was the only white one of His black brethren, who killed Him in jealousy. Taking pity on Bismarck, the Gods resurrected Him and gave Him the ability to fly, and Bismarck took with Him into the sky the Sea of Clouds. (The Bismarck encountered in-game, obviously, is not this Bismarck.)
9. Alexander (Goblins): detailed in the Alexander raids.

Origins:
Amal'jaa: unknown.
Kobolds: unknown.
Ixal: genetically degraded Iksalion from Azys Lla. (They even mention it in some text as "Ayatlan," a paradise, and one Ixal in the Ehcatl Nine camp even has new dialogue once you've been there. A panel in the Fractal Continuum confirms this.)
Moogles: unknown.
Sahagin: unknown.
Sylphs: unknown.
Gnath: unknown. (If the above "Ravana is based on Phantom Ray" is true, they too could be an Allagan-engineered race. A hive mind would certainly be useful for issuing commands...)
Vanu Vanu: unknown. (Hypothesized to be an Allagan creation due to them guarding the key to Azys Lla and treating it like a sacred object... until Bismarck ate it.)
Goblins: unknown.

In call cases of "unknown," it's possible (if not likely) they're simply a naturally-occurring species.