I'm actually very confused why these new (theoretical but probable) depictions of Rhalgr are looking Hyuran? Other than Koji's explanation for Hyuran Shiva statues being attributed to Hyuran sculptors.

Quote Originally Posted by Tyago Moui
They say Ahldbhar was the mightiest of the twelve Archons. Rhalgr the Destroyer himself, taken form in Roegadyn flesh─a bloody mountain of a man, and a fearsome warrior, besides. Not unlike our friend at the Coliseum, eh? You must’ve seen renderings of Rhalgr at some point─in paint or stone. Looks like a bag of angry muscles in a mage’s robes, right? Aye, well, those are done in the likeness of Archon Ahldbhar.
Quote Originally Posted by Hihibaru
In case you're unfamiliar, Rhalgr is the guardian deity of Ala Mhigo, which is currently under Garlean rule. It's highly uncommon for folk of other nations to revere Him.
So if most paintings and statues of Rhalgr are said to be in the likeness of Archon Ahdlbhar throughout the 6th Astral Era and worship of Rhalgr is almost exclusive to Ala Mhigo, wouldn't it stand to reason that it'd be Ala Mhigans who would be carrying on this 1500 year-long depiction into the modern day?

It's a bit harder to tell on the Spire card, Rhalgr's profile looks strikingly similar to Ramuh's model, with the notable exception of rounded Hyuran or Roegadyn ears meanwhile Ramuh has long pointed ears, likely a byproduct of the Sylph's interpretation.