Currently Brave Shields only can block trackers and ads at same time,
but I want to only block trackers, not ads.
This isn’t easy because ads also track. Maybe 20 years ago when ads were simple static jpegs or gif’s, it would’ve been easier to allow them. Most ads and trackers rely on javascript (some will rely on more than one file to execute the payload) to launch multiple popups and redirects. And then track the user views the the popups or redirects.
Using a combination of both lists improves user privacy, and general web usability.