Tess Romero, left, in “Diary of a Future President”; Isabella Gómez in “One Day at a Time”; Sierra Capri in “On My Block”; and Paulina Chávez in “The Expanding Universe of Ashley Garcia.” (Disney+ / Netflix / Netflix / Netflix)

The new year has already given viewers not one but two TV shows featuring Latina leads. On Feb. 17, Netflix premiered “The Expanding Universe of Ashley Garcia,” a sitcom about a Mexican American genius who, at 15, already has her Ph.D and works at the Jet Propulsion Laboratory in Pasadena.