The traits,Theory X/Theory Y,and behavioral models are probably the most popular and oldest of the leadership models.

Leadership Models

Models that describe different approaches and styles used by leaders to guide, motivate, and manage teams.

Theory X/Theory Y

A concept of human motivation and management developed by Douglas McGregor, describing two contrasting models of workforce motivation and behavior.

Traits Model

A psychological theory that attributes personality to a set of stable and enduring characteristics or traits possessed by individuals.