I think Facebook use to have the most. I think they are trying to correct that issue. MSNBC and CNN are tied in my opinion for creative looping and editing. Fox is sensationalist. I think the most dependable is OneAmerica News. As much as I hate to say it, Al Jazeerah is pretty straight and objective on most things.
No news in the mainstream is fake news. It can be slanted, it can contain errors (which are almost always corrected), but there's no such thing as "fake news."