Team Khaenri'ah

Arelecchino has a only a diminutive part rooted to Khaenri'ah and the rest to the current world, whilst Kaeya is one of the descendant of Clothar Alberich, so calling them Khaenri'ahn exactly isn't really all accurate, though some part of the anecdotes does add a bit of mystery and depth about them; especially with Arelecchino having the power; Crimson Moon which, by Pierro, was a Khanri'ahn family heritage that was, either passed down to her as an ancestral heritage or some kind of curse (which can also be a ancestral descension) subtly giving a sprinkle about her ancestral origin and the preceding heritage to the previous world, but not her "root" or existence, she herself, by the law of Teyvet and the current world, is a Fontainian.