Monsters have always been cross franchise. Almost every single monster in FFXIV has been in almost every other game in the franchise, and the similarities in appearance are easily explained by them merely wanting to create a standard appearance from one MMO to another as opposed to completely redesigning every monster, so in my opinion unless otherwise stated I'm more likely to believe any monster we see is a native to the cosmology of Hydaelyn. I use cosmology instead of world simply because we know that not every creature is from Hydaelyn, the Voidsent specifically.
As far as the Viera go, one explanation could be that somehow they dimension jump from Ivalice but I think this would be a HUGE kick in the teeth to the fanbase. I think it is more likely to think hat the race will either be from an isolated part of Eorzea, or that they are new immigrants from another part of Hydaelyn (just like every other race was except for the Elezen before coming to Eorzea).
As far as a source, I'm not sure where they got the information to be honest since the only Mamool Ja I've seen in game was one or two in Limsa Lominsa and I never bothered to talk to them, however the quote I posted above does not specifically say the Mamool Ja directly claim to be from Vana'diel, just that they speak of other worlds, not other lands, and reference a lot of things that would link them to Vana'diel and Aht Urhgan.
As far as the Viera go, one explanation could be that somehow they dimension jump from Ivalice but I think this would be a HUGE kick in the teeth to the fanbase. I think it is more likely to think hat the race will either be from an isolated part of Eorzea, or that they are new immigrants from another part of Hydaelyn (just like every other race was except for the Elezen before coming to Eorzea).
As far as a source, I'm not sure where they got the information to be honest since the only Mamool Ja I've seen in game was one or two in Limsa Lominsa and I never bothered to talk to them, however the quote I posted above does not specifically say the Mamool Ja directly claim to be from Vana'diel, just that they speak of other worlds, not other lands, and reference a lot of things that would link them to Vana'diel and Aht Urhgan.
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