Scanning through the above, there's not enough:
- Mendelssohn
- Schumann
- Schubert
- Chamber music in general (I only saw the Brahms Clarinet Quintet, which is a good rec)
- Dvorak - "Dumky" Trio
- Mendelssohn quartets and/or trios
- Mendelssohn violin concerto
- Schubert string quartets - Death and the Maiden of course, but all good
- Haydn Lark Quartet
- ANY Brahms or Beethoven chamber music. Beethoven Middle Quartets and Archduke Trio, Brahms Sonatas for more accessible, Brahms op. 51, Beethoven Opus 130 for truly innovative.
- If you ever need a good cry, try the slow second movements of Brahms, Schubert, Dvorak.
- Schumann piano - Kreisleriana, Carnaval, Kinderszenen
- Schumann String Quartets
- Hindemith's Viola Concerto "Der Schwanendreher" and Schoenberg's Verklarte Nacht are also beautiful. Neither is twelve-tone "serialist" but you are starting to get into not-for-beginners.