I'd say Smug, but to me, the actual villager dialogue matters more then the personality type. I just can't stand actively rude villagers in general.
As an example of what I mean: I had two Smug villagers on my island, Crayola, at the same time once: O'Hare and Olaf. I was at a higher friendship level with Olaf, as he had been there longer: he was the random Campsite villager from the tutorial phase of the game for me. For reference: I must've been at least friendship level 4 with Olaf, while I was maybe at friendship level 2 with O'Hare. Olaf left, but O'Hare is still on my island. And for the record: they were both planned to be cycled out. My player character is supposed to look like me, of course, but for the sake of clarity: I'll refer to her as my character and use 3rd-person pronouns for her.
Now O'Hare I like, because his dialogue sounded (and still sounds) as if he was always happy to see me somehow. I frankly didn't catch the rudeness in the dialogue, but that could just be my autism diagnose talking. I dunno, he just felt more like he actually wanted to be around my player character. You know, like he'd
want to talk to her more if he had the time. His dialogue always had the tone of 'yay, it's Melanie!' if my character talked to him: the text really felt like seeing my player character was a
happy coincidence for him. I made it a thing to talk to him at least once a day. I don't really actively gift him, but he's just generally nice to have around. And I frankly don't mind seeing him all that much when there's a villager task to be done involving him. I often prioritize which villager is the next to be cycled out, and while he's definitely not a permanent resident... he's pretty low on the priority list at this point. There's just villagers I that want off my island more then him.
Olaf, on the other hand, always sounded like he only tolerated my player character at best: like it was always a pain to be around me. the tone of his dialogue was more like the 'Oh eww, it's her' kind of attitude that I've sadly had to grow accustomed to over the course of my life. You know, the kind of feeling you get when someone can't actively avoid you, but doesn't quite manage to fully hide the absolute disgust they feel when around you. They don't openly and vocally hate you, but they're darned well not hiding it well either. That's what Olaf was like: a walking flashback to
those kind of people in my life. In real life, I always remind myself I'm under no obligation to put up with that, so I tend to have a 'live and let live' sort of attitude towards people like him. I don't actively start conversation if I don't have to, and if I do, then I do subtly let them know that being forced to interact with them isn't exactly a field day for me either. And according to my neurotypical friends: in no unclear social context terms either. So often, it's me who nopes out on the whole interacting with jerks thing. But if it's my island, then it's not
me who has to do that this time.
Needless to say: when a Campsite villager arrived, I resetted until Olaf's name came up.
Most of my island rules to other players boil down to 'don't be a jerk', and that lowkey extends to the villagers as well. If I'm in charge of Crayola, then I do not tolerate overly rude behavior on it. No ifs and buts about it: you either treat people with basic respect, or you take the next boat out of here. In my opinion, behavior like Olaf's is generally unhelpful and just plain unnecessary. We all have people we don't like, but you don't initially see me act like that towards people like him! Like, when the
autistic girl is better at generally being cordial to people then you are, then it might be time to re-evaluate your life decisions. Because that's just sad.