Who is widely recognized as the "King of Jazz"?

The title "King of Jazz" is most commonly associated with Paul Whiteman, who was a prominent bandleader and violinist during the early 20th century. However, in the context of your answer, while Duke Ellington was a pioneering figure in jazz and significantly contributed to its development, the term "King of Jazz" specifically refers to Whiteman rather than Ellington or the others listed.

Duke Ellington is celebrated for his sophisticated compositions, innovative arrangements, and the ability to elevate jazz to a respected art form. His orchestras featured uniquely talented musicians, and he crafted complex pieces that blended jazz with orchestral music. Ellington's work had a profound impact on the jazz genre, making him an essential figure in its history.

Understanding the contributions and historical context of each figure, it becomes clear that while they are all legendary in jazz, the specific title of "King of Jazz" does not align with Duke Ellington's recognition in the musical world.