I use nostr/amethyst as a pretty decent RSS reader (see guide below, if anyone reading this is interested). I have an RSS list, and sublists of categories.

There's now lots of RSS readers. Newsblur is a popular and open source one.

nostr:nevent1qqsgrpz6z5uzrrzvrchgv3gd90prdlju7qeef9lxayg5x6r2lpnlgsgpz9mhxue69uhkummnw3ezuamfdejj7q3qnjst6azswskk5gp3ns8r6nr8nj0qg65acu8gaa2u9yz7yszjxs9sxpqqqp65wh44pfg