There’s a difference between having natural human biases you try to avoid when reporting by using the usual context sentence (where, when, to whom something was stated), quote, appositive denoting speaker, quote format and writing “this guy is full of crap” or “you really need to believe this person” while cherry picking statements.
You can easily find examples of each. Both NYT and Slate are considered left leaning and at the same time have been the professional stomping grounds of right leaning writers that started their own media companies that are not left leaning. Everyone has a bias and they don’t have to work somewhere with that same bias, especially if you just stick to the paper’s style guide. On the same substance the two media outlets present the same topic very differently. Sometimes I appreciate the Slate format for the author’s candor and view being injected (like being pointed on Malcom Gladwell). Sometimes I just want to know the facts as clearly stated as possible (I don’t care if the author doesn’t believe in climate change, tell me what happened when North Carolina flooded).