Debian and then maybe Guix on top of that. Rootless Podman for services.
There is no good reason to choose Arch in 2025. If you want to feel special, NixOS or Guix System is the way to go.
I think Guix is way more coherent than Nix. It also has better documentation and a more friendly community. And you use Scheme instead of Nix lang.
I wish Ununtu Touch switched name, since its neither Ubuntu nor Canonical any longer.