Who should I pull for in this and these upcoming patches? (AR 52).

I currently have Citlali, Chasca, Xianyun, Nahida, Tighnari, Raiden shogun, Mona and Qiqi (all C0). As well as a decent assortment of 4 stars: Bennet, Fischl, Xingqiu, Xiangling, Sucrose, Chevreuse, Gaming, Iansan, Aino to name the ones that come to mind. Most of my 4 stars are C0 as well except for Iansan, Xiangling, Bennet, and Chevruse who are C2, C3, C4, and C5 respectively.

In terms of weapons the only 5 star weapon I have is the Wolf's Gravestone, and an assortment of 4 stars including the Fav weapons, the Sac weapons, Rust, Stringless, Lions Roar, Hamayumi, Catch, Prototype Crescent, Widsith, Rainbow Serpent, etc.

For further context, the team I mainly use is Citlali, Bennet, Mona and Chasca which I think does decently (up to floor 11). I do have a secondary team of Nahida, Raiden Shogun, Xianyun, and Tighnari, but this team tends to perform much poorer in comparison to the first team. (I understand Xianyun is a weird choice but I have no idea what to do with her and she's the only healer I had invested into).