“The filter relies on manually curated open-source blocklists, including the ‘nuclear’ list, provided by uBlockOrigin and uBlacklist Huge AI Blocklist,” DuckDuckGo said in a post on X.
I'm not sure the list has been provided by uBlock, looking at their repo[0] I understand that the list is available for uBlockOrigin and uBlacklist, but not made by them.
[0] https://github.com/laylavish/uBlockOrigin-HUGE-AI-Blocklist