In Song of Myself, Whitman attempts to reconcile and bring into harmony all the diverse people, ideas, and values that make up the American nation. Which groups of people does he choose to focus on particularly?

In Song of Myself, Whitman attempts to reconcile and bring into harmony all the diverse people, ideas, and values that make up the American nation. Which groups of people does he choose to focus on particularly? How does he describe people of different races, social classes, genders, ages, and professions?