3 points
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I bet the list maintainers accept tips!
At the bottom of the uBlock Origin homepage there’s links to the most popular list homepages which would be a good starting point.
The Peter Lowe’s ad tracking list links to its own Patreon: https://www.patreon.com/blocklist (Confirm by clicking on the link at the uBlock Origin homepage, then at the top click on patreon).
The other ones I couldn’t find any obvious way to donate to the list maintainers.
