I was going through the ArchWiki - OpenRC (https://wiki.archlinux.org/title/OpenRC) and found it not to be relevant to what Artix has. Basically Arch Wiki has most if not all, the configuration stored in the directory
/etc/openrc
While Artix does not use this directory at all. Artix uses a single global configuration file.
Why is there so much of a difference from Artix implementation of OpenRC and Arch? What are the other notable differences in how OpenRC is used in Artix and how it is used in Arch.
I know that Arch does not officially support OpenRC and supports only systemd.
Whenever possible, Artix's implementation mimics Gentoo (which is the OG). The real question is why the AUR package (OpenRC is not packaged for Arch, this page refers strictly to AUR packages) changed these paths.
Anyhow, in OpenRC's case your souce of information when you can't find something in the Artix wiki is the Gentoo's, not Arch's. The only important difference is that Artix enables the experimental openrc-init by default (so /etc/inittab is disabled).