> "ok install systemd..." and now... it just goes.

I believe it's `systemctl list-unit-files` to see all the config that's executed, included by the distro, and then if you want to see the whole hierarchy `systemd-analyze dot | dot -Tpng -o stuff.png`

To me, seems much easier to understand what's actually going on, and one of the benefits of config as data rather than config as scripts.