I've always found Jorgic's BH really amazing, and came across this video with a slowmo of Jorgic's BH against underspin. 

Although the video focuses on the power from the legs, another thing that really comes up is how open Jorgic's blade angle is even compared to some other BH dominant players like Ovtcharov. I suspect that is one of the secrets to his amazing speed. He seems to get a healthy amount of spin from it though, even without a lot of wrapping around the ball like what Ovtcharov, Kreanga, Lin Yun Ju or Fan Zhendong all do. The stroke path is quite linear in comparison. The only other player which comes to mind who has such a linear BH stroke is Sun Yingsha who also has this really open blade angle and goes straight through the ball.