If you're US based, there's tons of data broker sites, and you can glue together the information for free as various brokers leak various bits (E.g. Some leak the address, others leak emails, others leak phone numbers). And that's by design for SEO reasons, they want you to be able to google someone with the information you have, so they can sell you the information you don't have.
Some straight up list it all, and instead of selling people's information to other people, they sell removals to the informations owner. Presumably this is a loop hole to whatever legislation made most sites have a "Do Not Sell My Info" opt out.
What you do is look up a data broker opt out guide, and that gives you a handy list of data brokers to search. E.g.
