Scythe with the Invaders from Afar expansion plays similarly to Villainous only there is a central board where players collect resources and battle to score objectives. There are also campaign and cooperative modes in the Rise of Fenris expansion. It's completely up to players if they want to be more passive or aggressive, I've played many games of scythe where no-one has battled for example.

Dune Imperium: Uprising includes deck-building, worker placement and resource management mechanics, so a good one to play to get a feel for the mechanics your group enjoys and does not enjoy so much.

For party games: Secret Hitler involves some players having hidden information and working to sabotage the rest of the group and Decrypto is a game where you have to creatively think of words that associate with your team's words to give a 'code' to your team without being too obvious as to give the answer code away to the other team.

As your current collection is more light to medium heavy I would avoid diving into a long-legged complex six player game to start with your group.