From my research here are the top performing ads to use in 2024, with an emphasis on mobile:

  • Mobile Leaderboard – 320 x 50
  • Medium Rectangle – 300 x 250
  • Leaderboard – 728 x 90
  • Wide Skyscraper – 160 x 600
  • Large Rectangle -336×280
  • Square – 250×250
  • Large Mobile Banner – 320 x 100