ok so just started the first fontaine quest, i wont say where i am rn in case of spoilers, however, here's my assessment of the characters i've met/seen again:
lynette: deeply depressed. this catgirl needs headpats.
lyney: there's something sus about him.
furina: adorably annoying. i wanna kick her teeth but also i wanna follow her to her inevitable doom. like a scientist observing a wild beast.
clorinde: simp. furina's kujou sara. i think.
childe: what the fuck are you doing here.
freminet: turbo-depressed. this man needs hobbies and a break in his routine.
neuvillette: bro is elegant, bro is eloquent, bro is stunning, bro is an authority.
charlotte: she's the best clickbait writer in all of teyvat.
i have eaten some spoilers already so i know how at least 2 characters end up like. i still have to meet a few more. so far i am liking it.