The antonyms for the phrase "more high-and-mighty" could include humble, modest, unpretentious, approachable, down-to-earth, and grounded. These words describe individuals who are not arrogant or boastful and are willing to listen to others' opinions. They recognize that they are not superior to others and treat everyone with respect and dignity. Instead of putting themselves on a pedestal, they focus on building relationships and fostering an inclusive environment. They are approachable and easy to communicate with, and their humility and modesty make them endearing to others. These individuals are often admired for their genuine nature and their ability to connect with people from all walks of life.