What artists are included in the BillionDollarArtGallery?

Abbott Handerson Thayer, Adolph von Menzel, Albert Bierstadt, Albert Goodwin, Albert Joseph Moore, Albrecht Durer, Alexandre Antigna, Alexandre Cabanel, Alexej von Jawlensky, Alfred Stevens, Alvar Cawen, Amaldus Nielsen, Amedeo Modigliani, Andrea Mantegna, Angelica Kauffman, Annibale Carracci, Anthony van Dyck, Anton Mauve, Antonio Canaletto, Arkseli Gallen-Kallela, Armand Guillaumin, Arnold Bocklin, Artemisia Gentileschi, Arthur Bowen Davies, Arthur Dove, August Macke, August Strindberg, Bartolome Esteban Murillo, Benjamin West, Benozzo Gozzoli, Berthe Morisot, Brothers Le Nain, Camille Pissarro, Carl Rottmann, Carl Spitzweg, Caspar David Friedrich, Charles Le Brun, Charles Willson Peale, Childe Hassam, Clara Peeters, Clara Peters, Claude Monet, Dante Gabriel Rossetti, David Wilkie, Diego Velazquez, Domenico Ghirlandaio, Eastman Johnson, Edgar Degas, Edouard Manet, Edouard Vuillard, Edvard Munch, Edward Burne-Jones, Edward Hicks, Edward Middleton Manigault, Edward Mitchell Bannister, Edwin Henry Landseer, Egon Schiele, El Greco, Emanuel Leutze, Ernst Ludwig Kirchner, Eugene Boudin, Eugene Delacroix, Eustache Le Sueur, Felix Vallotton, Ferdinand Hodler, Fernand Khnopff, Florine Stettheimer, follower of Hieronymus Bosch, Francis Picabia, Francisco de Zubaran, Francisco Goya, Francois Boucher, Frans Hals (Pieter Codde), Franz Marc, Franz Ritter von Stuck, Franz von Lenbach, Franz Xaver Winterhalter, Frederic Leighton, Frederick Edwin Church, Geertgen tot Sint Jans, George Bellows, George Benjamin Luks, George Caleb Bingham, George Frederick Watts, George Stubbs, Georges de la Tour, Georges Seurat, Gerard van Honthorst, Giorgione, Giotto, Giovanni Battista Tiepolo, Giovanni Bellini, Giulio Romano, Giuseppe Arcimboldo, Giuseppe De Nittis, Guido Reni, Guilia Lama, Gustav Klimt, Gustave Caillebotte, Gustave Courbet, Gustave Moreau, Hans Baldung Grien, Hans Holbein the Younger, Hans Memling, Hendrick Avercamp, Henri de Toulouse-Lautrec, Henri Rousseau, Henri-Edmond Cross, Henry Ossawa Tanner, Henry Raeburn, Hieronymus Bosch, Honore Daumier, Hovhannes Aivazorsky, Hubert Robert, Hugo van der Goes, Hyacinthe Rigaud, Ilmari Aalto, Ilya Repin, Isaac Israels, Jacob Jordaens, James Abbott McNeill Whistler, James Tissot, Jan Kupecky, Jan Massys, Jan Steen, Jan Toorop, Jan van Eyck, Jaques-Louis David, Jean Auguste Dominique Ingres, Jean-Antoine Watteau, Jean-Baptiste Greuze, Jean-Baptiste-Camille Corot, Jean-Baptiste-Simeon Chardin, Jean-Francois Millet, Jean-Honore Fragonard, Jean-Louise Theodore Gericault, Jerome Myers, Joachim Patinir, Johannes Vermeer, John Constable, John Everett Millais, John Henry Fuseli, John Henry Twachtman, John Singer Sargent, John Singleton Copley, John William Waterhouse, Joseph Mallord William Turner, Joseph Stella, Joseph Wright of Derby, Juan Gris, Jules Bastien-Lepage, Jules Dupre, Karl Friedrich Schinkel, Kazimir Malevich, Lavinia Fontana, Lawrence Alma-Tadema, Lazslo Moholy-Nagy, Leonardo di ser Piero da Vinci, Lorenzo Lotto, Lovis Corinth, Luca Signorelli, Maria Blanchard, Maria van Oosterwijck, Marie Denise Villers, Marie Louise Elisabeth Vigee Le Brun, Martin Johnson Heade, Mary Cassatt, Masaccio, Max Liebermann, Michelangelo, Michelangelo Merisi Caravaggio, Nicolas Poussin, Odilon Redon, Oscar Florianus Bluemner, Paolo Uccello, Paolo Veronese, Parmigianino, Patrick Henry Bruce, Paul Cezanne, Paul Delarouche, Paul Gauguin, Paul Nash, Paul Ranson, Paul Serusier, Paul Signac, Peter Paul Rubens, Philipp Otto Runge, Piero della Francesca, Pierre Bonnard, Pierre Dumont, Pierre Puvis de Chavannes, Pierre-Auguste Renoir, Piet Mondrian, Pieter Brueghel, the Elder, Pieter Jansz Saenredam, Raphael (Raffaello Sanzio da Urbino), Richard Dadd, Rik Wouters, Robert Delaunay, Robert Henri, Robert S Duncanson, Roger de la Fresnaye, Rogier van der Weyden, Rosa Bonheur, Samuel Morse, Samuel Palmer, Sandro Botticelli, Sanford Robinson Gifford, Silvestro Lega, Sir Joshua Reynolds, Stefan Lochner, Theo van Rysselberghe, Thomas Cole, Thomas Doughty, Thomas Eakins, Thomas Gainsborough, Thomas Jones, Tintoretto, Titian (Tiziano Vecelli), Turner, Umberto Boccioni, van Rijn (Rembrandt), Victor de Grailly, Vincent van Gogh, Vittore Carpaccio, Wassily Kandinsky, Wilhelm Leibl, Wilhelm von Kaulbach, Wilhelm von Kobell, William Glackens, William Harnett, William Hogarth, William McTaggart, William Merritt Chase, William Stanley Haseltine, William-Adolphe Bouguereau, Winslow Homer, Worthington Whittredge