With WordPress this is fairly easy to handle both COPPA + FTC + Facebook (along with other Ad Network) requirements.

Write up your boilerplate text for all your disclosures.

Write a wp-cli script to inject all the various documents as individual named posts.

Some of my clients have me go one step more + actually generate a boilerplate footer with a menu of all these items.

Since this is in script form, you can also run it against any existing site + if... say... your TOS post is missing, then add it.

If you only have one Website, just search for COPPA boilerplates.