The Emperor of Mankind
Currently the galaxy's spookiest paraplegic
We are speaking about real life here not mythological characters only existing in comic books.
... wow. If the level of ignorance displayed here had physical mass it would blot out the stars.
And why is Aesop not in your list as well? His fables have been teaching wisdom for longer than all the others, and continue to teach to this day.
I think we both know why.
The Muslim empires themselves no longer exist, yet the Mohammedan religion lives on, that is part of the difference between Muhammad and Genghis Kahn, the influence of one goes beyond the reach of his military might.
The number of people who follow Tengrism today may not be as big as Islam but it's not an insubstantial number. Over 55,000 in Mongolia alone.