The only pictures of realism google image search for “art” in the top ten is the Mona Lisa, The Birth of Venus by Botticelli, and the Consequenses of War by Rubens slightly out of the 15.
Compared to two Van Gogh paintings, a Hugo Simberg painting, an anime mural, a digitally rendered skeleton covered in flowers, and abstract stock photos of an colorful eye, and two impressionist paintings.
So to answer your question it’s 3/10 are impressionist. 4 if you have a liberal definition of Impressionism and include the skeleton.
Compared to two Van Gogh paintings, a Hugo Simberg painting, an anime mural, a digitally rendered skeleton covered in flowers, and abstract stock photos of an colorful eye, and two impressionist paintings.
So to answer your question it’s 3/10 are impressionist. 4 if you have a liberal definition of Impressionism and include the skeleton.