Perhaps this helps from the bundle page: "This bundle doesn't automatically populate your library so you can chose what you want on your account. The first time you click 'Download' on a project below it will also be added to your library."
Viewing post in Bundle not showing up in library
Do you know if there is a way to add all the games to your library at once? I already know that I want to add all of them, but the process of doing this is cumbersome - you have to click on the "Download" button for each game, wait for the download page to load, then go back to the bundle page and click "Download" for the next game. It would take at least a couple of hours to do this manually.
I found myself copying the URL and opening it up in multiple tabs so I could add multiple games easily (use find on the page if you know the name). I believe the interface was only built in by leaf in the last few days. https://twitter.com/moonscript/status/1269068365991010304 Perhaps if you suggest, he may be able to make changes at some point.
Itch.io have some selections from the bundle as suggestions:
https://itch.io/c/891735/bundle-for-racial-justice-and-equality-selections