As a propaganda machine, Sinclair is far more dangerous than OANN. Although it's emerging a little more as itself lately, it is still for the most part a stealth network that operates through local "community" stations that present to the viewer as ABC CBS NBC & Fox affiliates.
What stands out for me about Sinclair is how stealth and deception are built into the company's structure and operating style. Not just it's programming. It exploits the credibility of other news brands, ABC, CBS, NBC, whose logos are prominent in Sinclair's iconography. Like so: 
If Sinclair had any pride, its local stations would BOAST about being part of Sinclair. They would name and own their ideology, which does frequently distinguish them from rivals: "Your conservative alternative in local news." But this is not Sinclair's way. Stealth is. Like so:
Here's a statement from Sinclair's @ericbolling claiming he was "caught off guard" when a conspiracy theorist floated a conspiracy theory on his show.
