I independently checked Mondoweiss using Media Bias a few months ago because it was posted elsewhere and I had not heard of it before, but was disturbed to see the extra reasoning behind the rating.
It’s for sure questionable at best, the Wikipedia discussion someone else posted was enlightening on that, but “designation as a hate-group by pro-Israel” sources doesn’t really mean much when sources like the ADL equivocate anti-Zionism and anti-Semitic rhetoric in bad faith.