I would say that hacker news is actually a fairly objective aggregator. It's also participatory, which hopefully checks bias at some level. But, as this isn't television... it's not a valid example, in response to your question. Also, hacker news isn't ad-supported, which is nice.
Probably not a universally unbiased source, but I think that many sources occasionally engage in objective reporting. I also think that number is probably decreasing in these times...
Validity of claims is one thing. Validity doesn't equal truth or objectivity. "Fake news" includes cases where the presented claims may be technically valid, but the "lie" exists in the omission of inconvenient claims which would invalidate the intended message of the story. The use of certain agreeable facts to drive a greater agenda rather than inform the viewer. Style is related, as it is the method through which a presenter can evoke a particular response in the viewing subject and entice the mind to follow along and be guided. This sort of psychological manipulation is common in people, beginning from childhood. In advanced forms, you have the con man or other such subversive entity, who has mastered the art of manipulation.
"👎" to the John Oliver reference. His "reporting" is as biased as it gets. His show is written in a style that convinces the subconscious to accept presented arguments without engaging any serious logical scrutiny. Just try to remember if at any point during any of his broadcasts you actually analyzed the subject of his monologues, rather than simply furthering the thought-process that he was laying out for you. Chances are that you never have because it's written to be persuasive (obviously) and only incidentally informative. Sadly, I know this is precisely what many people now believe "journalism" to be...