I have a test I like to apply to media bias websites. See how factual known US propaganda rags are rated.

Radio Free Asia: Factual Reporting High

Voice Of America: Factual Reporting High, Bias Rating Least Bias

Glowing reviews saying US government funded media outlets are unbiased and highly factual should trigger alarm bells in the head of anyone looking to get a factual reporting of events. Websites like mediabiasfactcheck don't serve to help people look at news critically: they encourage people to put critical thinking in someone else's hands so they don't need to bother with it themselves.