Based on Should we move the ansible-documentation repo to ansible-community org? - #10 by sivel, we are reviving this discussion on splitting the docs repos. We’ll use Return span of control of core docs back to core team · Issue #1538 · ansible/ansible-documentation · GitHub to track this in github.
Meanwhile, I’ll add a post here with the current list of files excluded from the core docs as a starting point, but there are a number of valid comments earlier in this topic that we need to consider as well.