What genres interest you? Do you want general news, a specific news subject, opinion pieces, lifestyle/DIY blogs?
The opportunities are endless.
I think that that depends an awful lot on your interests.
I think that I’ve had The War Zone’s RSS feed in a client before.
I try to use my feed as a way to broaden my horizons by mixing in publications that are a bit outside of my usual wheelhouse. Normally what happens is I’ll randomly run across an article and, if I enjoy reading it, I’ll add the publisher’s feed for a while to see what else they have. For example, Smithsonian Magazine, Aeon, and Planetizen can all be interesting from time to time.
I would also recommend subscribing to at least one publication focused on your city or state/region to help stay informed on local news and issues. If you’re in the US you can try checking out the local member of States Newsroom.
And of course, make sure you get your regular dose of XKCD and SMBC
A good general blog is boing boing: https://boingboing.net/rss
