Nah, the urls in the OP are just the result of a manipulated query string on search result pages that aren't noindex'dthey use shell to upload landing page or plant the backlink.
https://www.blackhatworld.com/seo/indexing-method.1527874/I'm working on this method
1. Search for keywords you want on any page and copy the address
2. Put the copied address into the link shortcut.
3. Use RankerX to create numerous backlinks to that address
4. Sending numerous backlinks to indexing service providers
It's expensive, so I'm still experimenting with it, and if you have any other rules, please recommend me one.