I use unbound (recursive resolver), and AdGuard Home as well (just forwards to unbound). Unbound could do ad-blocking itself as well, but it's more cumbersome than in AGH. So I use two tools for the time being.

The upside is there's no single entity receiving all your queries. The downside is there's no encryption (IIRC root servers do not support it), so your ISP sees your queries (but they don't receive them).

I'll throw https://nextdns.io into the mix. Been very happy with it. Supports DOH, block lists, among a plethora of other features.

The ones where you don't send a single company all of your queries

AdGuard DNS servers are excellent.

quad9