I don't recall Vance fucking with Jon even once in S1 so I really doubt it. Like already said earlier he's a pussy and will likely just moralfag.
He did a bit but it was always dog piling, he was too afraid to initiate anything or fuck with Jon in a way where he could get caught. It was always like how it was with Letty too where he couldn't bear their reaction to it and would instantly apologize as soon as they suspected he was being shitty.
When Jon was on his way out Vance took him aside and apologized in advance for the things Jon was about to find out he's said behind his back. That's how passive he is.
I have a feeling it's going to be a lot like season 1 where Jon will seethe at Letty and try and turn everyone against her for being a swut, even though it seems like it's supposed to be a free-for-all type situation. Vance will probably be his usual self and just go along with it. Fatty will naturally target her in his role as the forest ogre or whatever. Tai might remain neutral, I don't remember him being especially hostile towards her. Did Tay or Jimmy ever say anything about Letty?
Jimmy seems to like Letty in a general way. I think he's worried she's going to come down on him because she's tight with Abi now. But he's never said anything negative about her and defended her when Tay called her a slut - and since the group call he ended up in where Tommy was there he's spoken out against those guys. I think it'll come down to how fast he can make friends with her because as soon as she gets it into her head to provoke him he will not have the control to not take the bait.
Tay as far as I know doesn't like Letty at all still. I think when she was calling her a slut it was said with the expectation she would never meet Letty anyway so she was probably being more outspoken than she would've been to someone she expected to ever see. I expect her to make nice but the reasons she doesn't like Letty (Tay was DamNation, she thinks Letty used her appearance to succeed, she probably has no patience for Letty's lack of self reliance) will probably still flare up.
I think what's most likely to happen is they'll all start friendly with Jon being the only one leading the anti Letty rally. But at some point strenuous manual labor will be involved and Jon will have no trouble flipping Tay, Jimmy and Vance against Letty for being dead weight. Or Letty will get tired of retards in stereo and start fucking with Jon and Jimmy causing a fallout.
Regarding Jimmy vs Jon... Jimmy says some fucked up things, probably more fucked up than Jon a lot of the time. But at least when Jimmy says it it's coming from the point of view of someone who has been at zero, the lowest low, and seen the worst people, so even though his views aren't acceptable you can understand how the world shaped him and how he's gotta take time to unlearn it. With Jon he watched a few tiktoks and got hit on by hags at his softcore stripper job and decided to larp as someone who has as much of a record with bad women as Jimmy has. Jimmy is going to be talking about women hooking his sister on heroin and Jon's gonna be all 'i totawwy get dat, one time a 35 yeaw owd woman touched my ass wifout pewmission'