I'm not quite sure what you mean. Leadership is nature not nurture.

https://www.forbes.com/2010/10/07/brain-science-neurobiology-leadership-managing-hormones.html?sh=76cc953b71ba

https://www.sciencedirect.com/science/article/pii/S1048984312000811

https://www.iedp.com/articles/leadership-is-it-in-the-genes/

I can't find the link that I read years ago about whether only a small precentage of human beings are born leaders. I do know this. What passes for leadership today - patronizing one's staff so that they like one enough to do what they are told - is not leadership.

There is precious little leadership around today. A leader is someone who points the way to go, who solves the problem. Whether people follow or not is up to them.