One of those groups is Global Cyber Allience (GCA):
"GCA, a 501(c)3, was founded in September 2015 by the Manhattan District Attorney’s Office, the City of London Police and the Center for Internet Security."
Quad9 was founded by IBM, PCH (Packet Clearing House - they operate a lot of smaller countries' authoritative dns), and GCA (Global Cyber Alliance), but it's a standalone Non-Profit. https://quad9.net/about/
I prefer to use them over Google and Cloudflare since their whole non-profit mission is DNS.
They also offer a 9.9.9.10 service if you don't want the "Security block list" (I don't like blacklists I don't control).
