The information you gave is vague enough that basically any WM or compositor fits the bill.
Do you have a preference between X or Wayland? Do you want something that looks fancy like Hyprland? Is there something in particular that i3 doesn’t provide that you might want?
In that case, my favourite so far is River. Honestly what I like the most about it is that the creator seems like a nice guy, and I liked the talks he gave about the process of making a wayland compositor.
Otherwise, there wasn’t much difference between River and something like Sway. Sway had more documentation, and I could also use i3 documentation when needed. But I felt like sticking through figuring out River’s config file, and then it was just like any other compositor. And I liked it.