A few years ago, “Atlanta” and “PEN15” were teaching TV new tricks.

In “Atlanta,” Donald Glover sketched a funhouse-mirror image of Black experience in America (and outside it), telling stories set in and around the hip-hop business with an unsettling, comic-surreal language. In “PEN15,” Maya Erskine and Anna Konkle created a minutely observed, universal-yet-specific picture of adolescent awkwardness.