Post-Impressionism started out in the 1910 by the art critic Roger Fry when he was starting an exhibition in the Grafton Gallery. Post impressionism is a famous art movement which followed quickly after Impressionism.
roger fry
It can generally be considered a more loose style, and (generally) art only became more so until the current art movement.
The different types of art include: abstract, baroque, byzantine, cubism, dadaism, fauvism, impressionism, neoclassicism, pop, postimpressionism, realism, romanticism, and surrealism.
Romanic, gothic, renaissance, mannerism, baroque, rococo, neoclassicism, romanticism, impressionism, postimpressionism, pointillism, symbolism, synthetism,intimism, art nouveau, expressionism, fauvism. There are more.