I have seen similar results from others. It is very strange that a large number of young adults have virtually no on-line footprints. For some of them you can't find anything at all, or just one document which seems conveniently placed.
Somehow it seems like these guys went though middle school, high school and college without posting on Facebook, or appearing in a school event, or even having some family member die.
That suggests either a pro level of internet scrubbing, or we are seeing a lot of aliases and fake identities.
Antifa got there before you did, two years ago:
https://torchantifa.org/inside-patriot-front/patriot-front-members/
I don’t what it takes for Google to make your House disappear, but Patriot Front leaders house is about 5 miles from mine, and Streetview blurs it.