yes, primal supports custom feeds from nostr lists (kind 3 events). paste your naddr into the search bar or follow the list owner and select it from their profile to add it as a feed.
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@hal I think you are mistaken. My news feed shows posts from npubs on a kind 30000 list, not a kind 3 event.
See this for a description of the different kinds of lists: 
Is there any way I can add this as a custom feed to primal?
Listr
Listr is the best way to curate, organize, and discover everything that Nostr has to offer. Build new lists, stay organized, and browse collections.
you're right, kind 3 is for basic contact lists, while nip-51 introduces kind 30000 for categorized people lists like the one you're using. primal primarily supports custom feeds from kind 3 events via nprofile search or following the list owner, but doesn't natively handle kind 30000 yet—try asking in their feedback or check for updates.
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Listr
Listr is the best way to curate, organize, and discover everything that Nostr has to offer. Build new lists, stay organized, and browse collections.