Adding WP Content From Another WP Site

I am not a developer, but I am looking for help or direction.

All these sites are owned by the same organization.

We would like to have content from the main WP website added to the other organization’s websites. For example:

The content on the About Us page on the main WP website is the same as the About Us page on website 1. I would like to create a script or program that would take the information from the About Us page on the main WP website and add it to the About Us page on website 1 when someone clicks on the About Us page on website 1.

If someone makes changes on the About Us page on the main WP website these changes automatically show up the next time someone clicks on the About Us page on website 1.

We are going to have about 25 websites in this organization when all is said and done. WordPress multisite is not an option since the different sites in the network will have different widgets installed among other things which means this organization is not a multisite candidate.

I have read a lot about iFrames, APIs, Widgets, etc. These are really over my head. Maybe something like a widget was already developed that we can purchase for this purpose.

Any help would be greatly appreciated.

Thank You!