developer.mozilla.org (MDN)

[metametapod]

The domain on which the ads are served:

developer.mozilla.org

Example URL where the ads are visible:

• https://developer.mozilla.org
• https://developer.mozilla.org/en-US/docs/Web/JavaScript

A link to the site’s policy on advertising:

https://developer.mozilla.org/en-US/advertising

Suggested filter rule to override EasyList:

@@||developer.mozilla.org/pong/

Surprised this wasn't included already, I believe it meets all the criteria.

https://ads-for-open-source.readthedocs.io/en/latest/inclusion.html

Note: I don't work for Mozilla.