I don't follow any of these people. Therefore, I have no opinion of them or their journalistic skills.
I could have told you that.
I don't blame you, but they're real journalists, you seem more like a corporate mainstream media type.
But for a bit of info, they have worked for publications like Rolling Stone, the NYT. Greenwald won a pulitizer.
They have all left the mainstream for various reasons, mostly for reasons of their respective bosses not letting them tell truths that didn't fit a narrative, and they had the integrity to leave.
However, it also shows how insulated so many Americans are - these guys covered Snowden, the Twitter files, real Covid stuff, and so many haven't heard of them - wonder why?