Black musical excellence shifted from cultural margin to center of American life

Evidence

From that point forward, art that emerged in poverty, from want, in despair, art forged in immoral quarantine, would take its place at the center of everything. Art created by visionaries, innovators, and synthesists who had previously existed on the margins of American wealth and power would become the sun around which the culture orbited: Aretha Franklin, Quincy Jones, Jimmy Heath, Jimmy Smith, B. — Nikole Hannah-Jones et al., The 1619 Project, 1089

Categorization

• QUESTION: This lists artists chronologically — is the implicit argument that this canonization sequence itself is historically structured, and usable as a data set for how the center absorbed the margin?