https://support.apple.com/en-gu/guide/photos/pht6d60b524/mac
Create additional photo libraries in Photos on Mac - Apple Support (GU)
In Photos on your Mac, create new photo libraries, switch between libraries, and designate a library as the System Photo Library.
photo librariesin photosmac applecreateadditional
https://www.searchenginejournal.com/stock-photo-libraries-link-building/344227/
How to Use Stock Photo Libraries for Link Building
Jan 28, 2020 - Looking for a new link building tactic to use? Follow this eight-step process if you want to try building links by creating your own stock photo libraries.
how to usestock photolibrariesbuilding