I won't bother correcting the names, everyone else has already done it, but here's the grades:
Claude Debussy
- Reverie - Grade 7ish
- clair de Lune - Grade 7ish
- Arabesque - No1. Grade 8, No2. Grade 8+
Franz Schubert
- Impromptu 90:2 - haven't played this - sounds Grade 8 or so
Wolfgang Amadeus "Rudolf" Mozart
- Fantasia in D minor - Grade 6ish
- Rondo alla turca - Grade 6ish
Frederic Chopin
- Nocturne 9,1 - Grade 8
Franz Liszt
- Liebestraume - dunno
Johannes Brahms
- Intermezzo 118:2 - DipABRSM
(All grades ABRSM, some of these pieces have been on the syllabus this year so I know they're correct)
Edit: ok names corrected by request of etudes