Not too different from the majority, as far as I can tell.
Campman, for being an idiot, a hypocrite and for ultimately screwing everyone over because of his own idiocy. I mean, I know he's kind of mentally unstable by the point we actually get to talk to him, so his motives and reasoning was probably a bit skewed, but I have no sympathy for him -
everything that's happened to him started with him
losing his own son, and he accuses Lee of being callous and an inadequate guardian for Clementine? Are you serious? And then he's stupid enough to leave his car in the middle of a clearing, keys in ignition and everything, and expect everything to be intact when he comes back. Hell, nevermind being in a ZA, even in our own zombie-free world, no one would be stupid enough to do that. You leave your car like that, you are asking to be robbed. If I were his wife, I'd leave him too, for being such a useless jerk.
But yeah, as I said, he's gone crazy at this point, so it was probably just easier for him to blame Lee and his group for everything that happened than admit that he's an idiot that inadvertently let his whole family die.
And then there's the former resident asshole, Larry. Self explanatory choice, I think. I've tried to see things from his point of view and all, but he was just too violent and too much of a bully for me to like him at all. As someone said, he was pretty much designed to be hated, and I did hate him. I think the only point in his favor was that he loved and cared about his daughter, but honestly, who doesn't have someone they love and care about? Doesn't justify his actions or behavior.
I used to hate Lilly, but I've noticed both she and Kenny's attitude is quite different depending on certain interactions and who you side with more, so during my first playthrough, when I sided with Kenny near 100%, I really hated her. Second time, I tried to take her side at times and feed Larry and stuff, and I suddenly didn't hate her as much. I know she still takes off with the RV no matter what, which is why I still don't particularly like her, but I guess it's sort of justifiable considering the whole "Kenny murdered her dad brutally right in front of her face" thing.
I think that's all, the major ones that stick out for me anyway. I never hated Ben, despite the fact he's also a miserable idiot that screws people over repeatedly. Maybe because I get the feeling that if I were ever in a ZA, I'd be that raging idiot who contributes nothing to the group and screws up all the time.

Soo, I kinda sympathize, and I can't bring myself to hate him. People like us mean well, we're just massively uncoordinated and can't get our shit together.
And that part ^ doesn't contradict what I said about Campman - what I hated most about him is that he blames Lee and everyone else for the most part. At least Ben knows he's a fuckup, and wants to make amends for what he's done instead of assigning blame. As far as I can remember, anyway.
Edit: And just read Jaded X Gamer's post about Lilly, which reminded me of a few more reasons why I didn't like her.
Also, the lottery is a terrible way to determine who gets to eat. If it was really impossible to divide the food evenly every day and only four people would eat daily, then why didn't they simply make up a schedule and
take turns? That would ensure there was no favoritism going on, reduce the number of arguments and skepticism within the group and everyone would have the same chance to eat. Why would you even leave something like that to chance? It's entirely possible for someone to just have horrid luck and not eat for days because of this, not to mention extremely easy to rig, as I'm assuming she's not holding a lottery drawing show and pulling names out of a hat for everyone to see when she distributes rations.