u/saintseraphic

Hey everyone, if this has already been discussed, feel free to point me to the right thread.
As the title says, I'm wondering what determines how "undead" a vrakhir looks. I initially assumed it might be age: Xanthe is the eldest, and she looks the least human, even having horns. But Ambrus looks significantly more undead than Coen, even though they were turned around the same time.
Lacra is another question since we don't know her true age, her clothing doesn’t match what 14th-century Egyptian women typically wore, and she still looks about as human as Coen despite possibly being from Pharaonic Egypt.
Is it possible the level of "undeadness" is related to how much innocent blood is consumed by that vrakhir?

(P.S I know Sojourn has naturally brown eyes and her blue eyes are used as scanners, but for simplicity sake I put her on the blue eyes tier.) I don’t really have a big objection to it but it seems Overwatch has a fixation with blue eyes, but I do wish dark eyes got more love.