Consider reading some historical fiction that is set in some of the eras Kendi discussions, like Colson Whitehead’s The Underground Railroad, Yaa Gyasi’s Homegoing, Jesmyn Ward’s Sing, Unburied, Sing, and Octavia Butler’s Kindred.
Academic scholars who can offer more information about race, racism, and antiracism include Charlene Carruthers, Ruth Wilson Gilmore, Brittney Cooper, Cornel West, and W.E.B. DuBois.
Specific texts that would pair well with Stamped from the Beginning is include Kendi's other work How to Be An Antiracist, Between the World and Me by Ta-Nehisi Coates, Freedom is a Constant Struggle by Angela Davis, and Eloquent Rage by Brittany Cooper.