In general: non-intrusive, non-tracking ads, with robust verification (i.e. not scams or lies), such as the ones you find on https://modrinth.com, or duckduckgo

With adnauseam: https://github.com/dhowe/AdNauseam/wiki/FAQ#what-is-the-effs-do-not-track-standard-and-how-it-is-supported-in-adnauseam