I think NBC, ABC and CBS are a bit more left leaning than the chart proposes (by at least half a quadrant), but other than that I largely agree with it. I made one small addition, see if you can spot it.
The site will go through their whole methodology on how they generate their data if you want to go down that rabbit hole, also the plot is from 2018, maybe needs an update as society does seem to be getting even more partisan. Zero Hedge, never heard of them, good to know to avoid. I prefer to stay in the green/yellow zone if I'm actually choosing.