Here on the forum is the right place to raise issues like this, and tag your post using the galaxy-ng tag. You can also use the @CommunityEngTeam group.
I’m not aware of any existing documentation like this on docs.ansible.com. The docs are always open to contributions at GitHub - ansible/ansible-documentation: Ansible community documentation · GitHub to include useful projects from Mirroring / proxy caching galaxy on an existing or new page.
At CfgMgmtCamp 2026 Ansible Contributor Summit, there was discussion of deploying a community status page to monitor community services and other related infrastructure: Ansible Community Status page & Notifications - Please join the dicussions there if you’re interested.