My own best five in bold:
Literature:
Homer, Aeschylus, Euripides, Sophocles, Aristophanes, Cicero, Seneca, Virgil, Horace, Terence, Juvenal, Plutarch, Catullus, Julian of Norwich, Boccaccio, Dante, Petrarch, Montaigne, Shakespeare, de Cervantes, Omar Khayyam, Calderón, Rabelais, Milton, Middleton, Goldsmith, Swift, Sterne, Fielding, Johnson, Pope, Blake, Wordsworth, Byron, Shelley, Goethe, Schiller, Rousseau, Voltaire, Tolstoy, Dickens, Dostoyevsky, Pushkin, Gogol, Turgenev, Nietzsche, Schopenhauer, Tennyson, Swinburne, Baudelaire, Balzac, Hugo, Dumas, Sand, TS Eliot and a dozen or two more.
Music:
Bach, Vivaldi, Handel, Haydn, Mozart, Beethoven, Verdi, Schubert, Schumann, Mussorgsky, Berlioz, Tchaikovsky, Wagner, Ravel, Prokofiev, Shostakovich, Elgar, Britten, Walton, Puccini, Debussy, Chopin, Tallis, Boyce, Brahms, Mendelssohn, Mahler, Weber, Scriabin, Strauss, Hindemith, V Williams, Dvorak, Bartok, Grieg and no others.
Painting:
Giotto, Duccio, van Eyck, Fra Angelico, della Francesca, da Vinci, Botticelli, Bellini, Dürer, Bosch, Giorgione, Raphael, Michelangelo, Titian, Holbein Jr, Bruegel Sr, El Greco, Caravaggio, Rubens, Rembrandt, de Hooch, Vermeer, Velázquez, Reynolds, Gainsborough, Hogarth, Boucher, Vigee Lebrun, Constable, Delacroix, Goya, Degas, Courbet, Millet, Manet, Ingres, Cezanne, Renoir, Pissarro, Monet, van Gogh, Munch, Picasso, Klimt, Hopper, Dali, Lowry and few, if any others.