I like https://ooh.directory/ - you can find sites you like by category, and it’s all oriented around RSS, so you know the feeds work and are up to date. You can even follow this site using RSS to see when they add new sites or categories!

I’ve been using Newsblur for a few years now and it’s been great. It’s very configurable. They have a hosted version or you can run your own. https://www.newsblur.com/