Why not 3Blue1Brown, Numberphile or Mathologer?
They'd all be deserving, but only one person can win every 4 years. You can read about how the prize is awarded on the website: https://www.mathunion.org/imu-awards/leelavati-prize
Agree. 3Blue1Brown is a personal favorite and an astonishing teacher. May his pillow forever be fresh and cold on on both sides.
Brady has enough awards.