The most common name in Eorzea

[Eekiki]

Surprisingly few Kikis....I can't imagine why...

Cloud Strife
Sephiroth Strife
Sephiroth Ziegelwange

Names like "Cloud" and "Sephiroth" are restricted, so you'll see misspellings of these names by lazy people who can't just think of something else to reference.

Nunh and Tia is the only lore friendly surname a keeper of sun Male Miqo'te can have so those are probably the most common male name in Eorzea, as all those npcs will have those names

True, though there seems to be a heck of a lot more mancats named Nunh than Tia, although the lore indicates it should be the other way around. Lots of mancats think very highly of themselves, I guess.