There was/is quite many of those done via the RSS-bridges already but I never found them to work consistently.
Either it was the nostr client changing the relay settings (removing the bridge relay) or something else happened (the bridge stopped updating).
I collected some 50-100 on my following list in the spring but don’t have them anymore.
A micro-bot / service where you could look for your favourite user with their handle (twitter/mastodon/bsky), website address or RSS-feed address might help in discovery and feed population, and add them if they don’t have a feed yet.
This is the other way to do it on the client side:
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