US realist painter who painted automat and nighthawks?

Edward Hopper

There may be several paintings of that name. A famous one "The poor Fisherman" now in the Musée d'Orsay in Paris, was painted by Pierre Puvis de Chavannes in the late 19th century.

The Frenchman Gustave Courbet was one. Diego Rivera and Jose Clemente Orozco were famous Mexican muralists who worked in the Social Realist style. The style was also important in the Soviet...

Hans Holbein Jr, court painter to Henry VIII.

Vincent van Gogh.