So...

Reading this list and knowing nothing else beyond the connections that can be made between those present, who else should I add? 

Pablo Picasso.
Jesus Christ.
William Shakespeare.
Walt Whitman.
Ralph Waldo Emerson.
Emily Dickinson.
Leonardo Da Vinci.
Robert Frost.
Sylvia Plath.
Michelangelo.
The Beatles.
Bob Dylan.
Edgar Allan Poe.
Henry David Thoreau.
Shel Silverstein.
Theodore Geisel.
Steven Spielberg.
George Lucas.