I don't know enough about individual publications to say whether I agree that their ratings are off, but I do like how allsides allows you to vote on whether you agree with their ratings[1] -- and I encourage you to. At least out of their site visitors, there seems to be a decent degree of agreement. I think what they're trying to do is admirable and it's an extra bit of legitimacy that they're willing to admit they're not perfect. If there's a better source for exploring media bias out there, I'm not aware of it.

[1] https://www.allsides.com/media-bias/media-bias-ratings