I'm with you, Lebron is good but in terms of Leadership I like "THE CLAW" Kawhi Leonard as he is willing to take the last shot, the last season, in the playoffs and NBA finals, there's a lot of highlights we can see how Leonard carry his team, including a thrilling win over the sixers as after that win, they never struggle anymore winning the NBA Finals.
Now that's something.
I thought I am going to see comments of pure Lebron fans only.

IMO, they are different when compared to leadership.
I don't see Kawhi talking a lot when it comes to crucial minutes which is the opposite of Lebron.
Kawhi will just let the coach do the work while Lebron could change the view of a coach. That's the difference, Kawhi still consider himself as a player, unlike Lebron who fired and like to fire a coach because he chooses his coach, he seem to think that he is really the most valuable in a team.
Here's the list from the article.