- Symphonies: Beethoven, Bruckner, Haydn, Mozart, Shostakovich (esp. 4th & 8th)
- Operas: Mozart, Verdi
- Piano pieces (solo): Beethoven, Schubert, Schumann
- Piano Concertos: Mozart, Beethoven, Bach
- Violin solos: Bach (undisputed master), Paganini
- Violin Concertos: Bach (also double concerto), Beethoven, Brahms, Khatchaturian
- Cello Solos: Bach (ultimate master)
- Cello Concertos: Elgar
- String quartets: Beethoven (undisputed master), Cherubini, Haydn, Mozart, Schubert, Brahms, Franck, Mansurian, Shostakovich (4th, 5th, 7th & 8th in particular), Martinu
- String Quintets: Mozart (undisputed master, nothing like k. 516), Schubert, Bruckner
- Piano chamber music: Brahms, Schumann, Mendelssohn
Categories you had failed to mention:
Overtures: Beethoven
Oratorios: Handel
Masses: Bach, Beethoven, Mozart, Haydn
Requiems: Mozart, Cherubini, Faure
Ballet: Tchaikovsky, Khatchaturian
Organ Solo: Bach (undisputed master)
Modern Choral Favourite Composer: Pärt
Favourite Modern Contemporary (Living) Composers: Pärt, Mansurian, Sharafyan
Some favourites I cannot quite place into a category: Rameau, Handel (concerto grossos), Dvorak