You did say prominent, which is defined as important or famous.
Maxine Waters - well known in most circles, coast to coast. In some circles you may receive the "who?" answer, but most know who she is.
AOC - Famous and mostly well received within the democrat community. At one point, she was pegged (may still be) as the next rising star in the democrat party. Then she introduced the green new deal. That also made her famous, not in the way she had hoped.
Kamala Harris - considering she's about to be the VP of the US and the first Jamaican to hold that position, she's prominent, probably at the top of the list.
All three were qualified answers to your request.