Photos Library keywords not exporting to Finder/Preview keywords
I'm optimizing 1000's of photos with keywords for SEO for my website and Google My Business. After adding keyword though the Keyword Manager in Photos Library (1st image), and then exporting to Finder, the keywords do not show up in Finder when viewing Get Info where they are supposed to (2nd image). Neither are the keywords in Preview (3rd image). Where is Apple storing the keywords in Photos and vice-verse; why is there a discrepancy?
Is there a way to automate and bulk add keywords to images in Finder through either Finder or Preview? Currently, I can only see how to edit one photo and one keyword at a time through Preview. I don't want to upload my images with Apple's Photos keywords and have them not even be "real keywords (i.e. keywords only used for Photos Library, if that's what they are).
Thanks for the help in problem solving this.
MacBook Pro 13″, macOS 12.0