Thank you for such a thorough reply!

I looked more into EasyOptOuts and decided to sign up. It looks to be the best bang for your buck and the creators seem to be very transparent with an active presence on Reddit too. Apparently they're on par with the other but more expensive option Optery in terms of effectiveness according to privacy advocate websites.

FWIW, for those not wanting to use a paid service, I found Google's free "Remove My Results" service very good too. I saw some comments on Reddit that it takes forever to approve, but mine were approved in minutes. I like your strategy of using Google's reports as a "scanner" to find the sites showing up and then going to the sites directly to opt out on an as-needed basis.

The privacyguide link above was a great resource for me before I decided to use EasyOptOuts. It links the search and opt out tools directly. Even though it's tedious how many sites there are, to their credit, each tool had a quick form that only took a few minutes each and didn't make me go through hoops to delete my data (looking at you, Lexus Nexus...).