Known as one of the best Tekken players in the world today, Knee has shared his ranking of characters in Tekken 7 along with some brief thoughts on them. Flying Wonkey has translated Knee's notes, which were originally posted by Kuro Kuro, and has added them to a TwitLonger post.
According to Knee, Shaheen sits alone atop the T7 roster at rank SS, with Law, Feng, King, Jin, Devil Jin and Kazuya rounding out the S rank. Knee's observations also include some caveats, including one that claims King becomes SSS tier on the stage with multiple breakable floors.
For the rest of the list, check out the picture posted by Kuro Kuro here.