the ballet world for its entire history has only known two really great choreographers - Marius Petipa and Yuri Grigorovitch. the latter was the only choreographer in 20th century ballet who staged truly groundbreaking choreography comparable to that of The Rite Of Spring's in innovativeness and being ahead of time. Grigorovitch is the only ballet revolutionary whose works have not been surpassed by anyone in terms of breakthrough in new ballet technique and staging.
here's some of his works -
Prokofiev - The Stone Flower
Shostakovich - The Golden Age