Takato is the best leader because he never wanted to be one.

His genuine love for Digimon just illuminated his imagination the world around him to create change. Putting him in the position of leader.

Taichi is a natural born extrovert who is an older brother.

Davis is a natural extrovert who wants to lead and even shows that through soccer.

Takato is a single child involved in his inner world. Who admits so many times he is scared and “is the worst tamer in the world”.

The list can go on I guess lol.