I know that Ishgard doesn't canonically have it's own dialect or language, but realistically speaking a country that is as isolated and xenophobic as they are would have it's own dialect or even language. The isolation would prevent the influx of loanwords, and they would be resistant to the linguistic shifts that are happening elsewhere, and the linguistics shift that are happening there wouldn't spread anywhere else. So I've always headcanoned that Ishgardians still have traces of whatever the Elezen spoke when they founded the country.
Same thing applies to Duskwights, because they lived in caves while the Wildwoods lived in Gridania.
Same thing applies to Duskwights, because they lived in caves while the Wildwoods lived in Gridania.