Are you talking about nomorecoasters.com? If so, I would not put much value into it, there are alot of inaccuracies on the site. Also, making any graded list for media is difficult and will be filled with exceptions. And what media works well on one burner or firmware can work poorly on another. Further, some media codes can be much better than others even within a brand. It will also vary by brand the discs are sold under, etc. For example, most Ritek G04 is good media, while Ritek G05 is mostly a nightmare because of poor stability.
Your best bet is to look at the media tests in the media forum, follow the threads in the media forum for trends in media, and to look at the test results in the NEC forum for you specific burner. Find the threads for your particular burner and firmware and find out what works well for others with the same setup and what doesn't work well.