No need to dance around the question.
All those websites, until recently, have been called conspiracy theory websites, producing nothing else but conspiracy theories.
When those conspiracy theories generating websites ended up at the winning side of the elections, they needed to come up with the new name, for conspiracy theorists were, shall we say, mostly right.
Fake news are formerly conspiracy theories.
P.S. I think NYT and Washington Post, and many others, should look to see who predicted with 98.1% probability of certain recent events.