Feed discovery is a challenge, but there are a number of current efforts to make it easier. Far too many to list here. Briefly:

There are curated lists:

- https://blogroll.org/

- https://minifeed.net/

Community lists (planets)

- https://planet.debian.org/

- https://www.planetpython.org/

Curated themes (like Bluesky starter packs):

- https://minifeed.net/lists

- https://www.youneedfeeds.com/starter-packs

Webrings are cool again:

- https://webring.xxiivv.com/

- https://brisray.com/web/webring-list.htm

This collection of HN blogs is pretty good too:

- https://github.com/outcoldman/hackernews-personal-blogs

- https://blogs.hn/about

I've been trying to aggregate many of these into a giant list, https://alexsci.com/rss-blogroll-network/blogrolls/, which is especially focused on OPML blogrolls: https://alexsci.com/blog/blogroll-network/