This.
- Kan-E-Senna is a Padjal and implied to be older than she appears, possibly older than any of the main cast. We also don't see really see her in a personable light, only as the speaker for Gridania. (Missed opportunities to see her as a big sister to Raya and A-Ruhn).
- Merlwyb's hat is that she is a badass pirate admiral. And that's it. We don't see her in any other light.
- Nanamo is the only one of the three OG grand company leaders who is fleshed out.
- Minfillia was only really seen as the boss for pretty much all of her screentime, not really personable.
- Y'shtola couldn't care less.
- Yugiri is wholly devoted to serving her Lord Hien. I can't see her being "distracted" from that.
So... I guess it comes down to waifu material, it's Nanamo and Alisae, and maybe Krile? Then again, given their stature and appearance, Westerners are probably going to go "eww no".
If you're into husbandos, however, FFXIV has you covered. You got brooding bad boy Thancred, the personable Aymeric, confident and charismatic Hien, and your pick between two handsome silver foxes: Raubahn and Gosetsu.