Fair! I guess it depends how you frame the issue.
Google is a search engine, so to me that's not really an apples to apples.
If we're including the tv networks you listed as "left," (and yes, they all lean way farther left than Fox) are we also including Newsmax and OAN? Even among those there are degrees of lean and prominence. And what do we do about websites? Drudge leans way right and has a very big outreach, but hates hates HATES Trump (hates all Bidens and Hillary too, routinely nails Stacey Abrams and other left idiots, but hates Trump the most). I'd say that's a mainstream very conservative, anti-Trump news source. And even with small town local news stations, a lot of them get their national stuff from Sinclair, so that's a whole lot of lean right outposts.
So I will leave it factual; the single biggest mainstream television news network is FoxNews and they are as mainstream as it gets, but in the mainstream universe there is an array of political persuasions and degrees of 'lean'.