I've mostly quit scanning sites for news now that I have YOShInOn but I do look at the first two of your sites, World Nuclear News and Tony Ortega's site.
If you want to see what YOShInOn samples shows me take a look at my submissions because it saw every one of of those before I saw it.
What is YOShInOn?
My RSS reader. It invests more than 100 feeds, about 3000 articles a day. It does content-based recommendation (no collaborative filtering, popularity data, pagerank, anything like that) and looks like “TikTok for text”
Mostly over my rss reader:
1. Heise.de
2. Golem.de
3, lwn.net
4. The register
5. Hackernews
Talking Points Memo for US political news and analysis. Absolutely the best.