You know, I was making similar guesses like that. For me, I thought Anatolia was a combination of Europe and Russia; Suji was Asia; and Ascalon Isles was the Caribbeans and Central and South America.

As for Tyria, Centra, and Croatoan… I’m still guessing. Maybe Tyria and Croatoan are Mexico, Africa, Australia, and/or Middle East; and Centra is North America. Or Tyria is North America, Croatoan is every dry/dessert like place; and Centra is the combination of every region in Atlas (no place specific).

But since I can barely see any dessert like places on Atlas, there might not actually be that many dry lands.