Daniil Simkin is a soloist at American Ballet Theatre. He was trained by his parents who attended Bolshoi. Somewhere in there he does 7 pirouettes and then stops on demi pointe. Pretty hard thing to do!
Nikolai Tsiskardze trained at the Bolshoi Ballet School with the one of the best teachers in the world, Pestov. I don't know what makes him good but he's a principal at one of the best ballet companies in the world Bolshoi Ballet, so I'm posting this.
Carlos Acosta trained in Cuba and then went to England to dance as a principal for the Royal Ballet. he has danced as a guest artist at Paris Opera Ballet and Bolshoi Ballet. He in my opinion is the best dancer in the world. He can jump, he can turn PERFECTLY ( the 7 pirouettes in the middle of the variation) perfect 90 degree leg in his grande pirouettes. And he's incredibly clean hence why he went to royal ballet.
Tetsuya Kumakawa was originally trained at the Royal Ballet school and he danced with the company for many years. But later he left and formed his own company called K Ballet in Japan. This his him dancing in Coppelia act III. Pause at 0:58(:
Steven Mcrae from The Royal Ballet is a clean dancer and can be very reliable when a good dancer is in need. He won Prix De Laussune in 2003 and got into the Royal Ballet School. he joined the comapany a few years ago and has been dancing since.