Code Geass: Hangyaku no Lelouch, Dr. Stone Recommendations
These anime both focus on a genius main character Lelouch & Senku respectively. They both take heavy inspiration from and are essentially set it our world's own future (the "real" world). The OST's and art styles for both are absolutely incredible and the characters & character designs are charming, lovable, engaging and relatable. Both series are also great at making you root for characters who may even have questionable motivations and ethics.
-Both outsmarting everyone
-Fighting to change the world
-Has a smart rival