Artix Linux, the xfce spin. Arch-based but more based, on account of having good choices for init systems - runit is just one of the choices offered. Artix is fully compatible with any Arch package, even ones that rely on systemd, thanks to a compatibility layer that translates between the interfaces.
Void Linux also uses runit I believe.
Both are focused on being more respectful of the UNIX philosophy while also being highly compatible with state of the art programs targeting a Linux environment.