Originally Posted by
Cleretic
I'd definitely put Emet in the field of 'dark and edgy pretty men'. Even if he's more than just 'dark and edgy pretty man' by story, it really can't be discounted that a big part of his appeal really was that he's a charismatic villain with something resembling a point, who is also by objective measures an uber-war-criminal, and wizard of darkness, whose true name is from the god of the underworld. If you're into Zenos because of the 'dark and edgy factor', you're into Emet-Selch for the same reasons, even if there's other appeals there too.
For the record, my gut-vibe of characters competing with Zenos in the field of 'dark and edgy pretty man'...
-Estinien (the diet variant)
-Emet-Selch
-Gaius, but only post-Stormblood
-Elidibus (not dark palette-wise, but definitely tonally, and edgy enough to compensate)
-Mitron if you're into a fixer-upper job
-Fandaniel, in two different flavors
-Hesperos
And let's be honest, if you want to flex into headcanon, the only Ascians that can't fit into this are the ones that are canonically women (Igeyorhm, Loghrif, Emmerololth). Even then, there's an angle you can work.
But in Stormblood when Zenos was current, none of them were really a thing. Estinien existed, sure, but wasn't really a major player (or known as hot). Dark and edgy women were putting up good numbers at the time (Fordola, Yotsuyu, Ysayle was still semi-recent), but I think we all have to admit that they serve different fanbases without as massive an overlap as you might first think; Zenos and Yotsuyu appeal to different crowds. Zenos was the only 'edgy man' game in town around Stormblood; it's just that over time that market split.
Thank you for reading (or more likely skipping over) my pointless and semi-serious deliberation on FFXIV shipping/character-focused fanbases. I have put too much thought into this. I could do a whole presentation on this, but I don't really have much in the way of a thesis statement, and also nobody cares.