I assume that you are aware that journalism is dominated by left leaning people. How is this bias reflected in your diagram?
The answer is that it isn’t. Those news sources you have in the middle are actually on the left of the political spectrum. This is why Fox has done so well. They are the only right leaning MSM.
The Guardian a source I read regularly is much further left than Fox is right. I would shift everything one category to the left.
Remember, journalists lean left and they hang with left leaners. This makes them lean more to the left over time. This is a natural evolution and not a radical crazy idea.