Since you obviously didn’t read the comment I linked to, I’ll copypasta the relevant bits:

The whole concept of the “left” or ”right“ “bias” being inversely correlated with factualness is garbage. These kinds of graphs, which try to convince us that centrism equals factualness, are garbage:

The core bias of corporate media is the bias of the capitalist class.

The inner workings of corporate media were explained about forty years ago in Inventing Reality and Manufacturing Consent.
A five minute introduction: Noam Chomsky - The 5 Filters of the Mass Media Machine