What were the most powerful samurai called?

The most powerful samurai were known as "daimyō," who were feudal lords that held significant military and political power in Japan. They commanded large armies of samurai and governed vast territories, often engaging in battles for control and influence. The daimyō were pivotal during the Sengoku period, a time of civil war and social upheaval, and played crucial roles in the unification of Japan under leaders like Oda Nobunaga and Tokugawa Ieyasu.