It's simple, you take the inverse. If you are looking for the right leaning accounts, look at the most downvoted and controversial comments in a given political thread.

I will say that true conservatism is few and far between, and it doesn't help that the viral strategy the GOP has settled on in recent years is heaps and heaps of outright false or racist memes, so there just isn't much good right leaning content being written or created to begin with that isn't far right.