I don't think I've ever had a hugely popular villager in my campsite. Most popular I've had was Maple who was originally a dreamie but in the end I didn't have space for her (and decided I wanted other villagers more) so I'm not too upset that I couldn't ask her to move in.
Only move in I've had from the campsite has been Tom and I love him to bits so I'd say that he's my best camper
Marshal at my old town, back when I was knowledgeable enough about ACNL to know how to campsite reset (And had all the time in the universe) but not involved enough with the fandom to know just how popular he was. I did like him a lot as soon as I saw him, so I decided to invite him!
I seriously cant believe how lucky I was that day (He was like the 3rd one to show up that day, I remember very well because it usualy took me hours to find a villager I actualy liked )
I've had several villagers in my campsite already (without campsite resetting), including a gorilla, a bear (very very grumpy, I don't know who it was again), Gala the Pig (cute!) and today I have Blanche the Ostrich. I've been wanting to have an Ostrich in my town, and a Snooty one is fine for me since Ankha will move next month.
During playing games with her, I noticed she can be a bit snobby, but also had a sweet side to her, so I'm liking her already and can't wait for her to move in! (prolly gonna TT and then plot reset tonight, or else I will forget to when she will put down her plot and I don't want her in the way XD I'm not gonna be very picky with it, or at least that's what I'm aiming for XD)
Julian who now lives in my town. I also had Marshal once but I had 10 villagers at that point but now I'm glad I did because I wouldn't have his house placed so perfectly I have now if I did invite him back then.
Popularity-wise, I saw Julian and Merengue in my campsite... and I didn't invite either of them. I also saw every single Cranky Wolf except for the one I'm looking for.
The only camper I've invited is Zucker, and I like him a lot, but I wasn't really looking for him. I just got him because I was tired of campsite-resetting, and he's honestly my favorite of the super-popular villagers.
I got lots of campers I really love. Erik, Fauna, Charlise, Hamlet, Apple and Skye. They all live in my town ^-^
I was tt on my boyfriends copy at the weekend moving out some of his villagers he didn't like and got him Gayle and Marina through the campsite.