Definition of independent for the purposes of this question: source is not owned by a for-profit corporation, is not financially backed by any billionaire (either directly or via foundation or nonprofit organization) and is not financed by any national government (even if run without oversight).
It can have any perceived bias or political leaning.
Edit: Just to add it has to be written in English.
I’ve read some good balanced stuff on “substack”. But you have to pay for most of their content. I found a few real journalists there that will allow you to read some of their stuff no charge