Most of the widely believed conspiracies on the left are to do with Trump being a Russian agent. Probably because a presidential candidate couldn't accept the results of an election and resorted to conspiracy theory to question the validity of the election.
I guess it just so happens that you've chosen to highlight a bad example of a conspiracy from the left side and a good example from the right side in an effort to dispute a study that shows both are similarly susceptible.
Ironically, you're comment is useless due to the conspiracies you've chosen to highlight. There are plenty of left/right examples that _are_ completely valid. Just ignore the ones you don't think are legitimate and I think you'll still have plenty on the left and the right.
Let me stop your silly study right there.