endeavourOS kde is gorgeous and by far the most stable and ready-out-of-the-box arch version i've tried.

also the eos-packagelist --install [desktop environment] command lets you install the other endeavourOS themed DEs or WMs just like the distro installer does so you don't have to reinstall or work on themes yourself if you want to change after install.

pipewire is also ready to go and i think it uses some kind of realtime thing, but i'm using the default kernel so i don't know that it's a low latency kernel level thing by default.

games have also been top notch for me, the only tweaking i've done is adding -vulkan launch options to steam games.

overall i highly recommend it. i'm using kde but tried cinnamon, i3, and sway (though community editions like sway are going unsupported soon) and they are all similarly well-themed.