What leadership approach is considered the most dominant among the styles and why?

Democratic leadership approach

Explanation:

Democratic leadership, often recognized as participatory leadership, is a form of management style wherein team members play a much more participatory position in the procedure of  making business decisions.

        The option to engage is provided to all in such a framework, ideas are openly shared and conversation is promoted. Because the democratic process focuses solely on the equal rights of groups as well as the unlimited flow of information, the team leader is only there to provide advice and influence.

Such style of leadership will extend from private companies to schooling to the government to any entity. That's why it is considered to be most dominating.