All just my personal opinion
Rubinstein’s Solo Recording Repertoire: Mozart: Rondo in A minor, K.511 (in comparison with Walter Gieseking, Ronald Brautigam, and Kristian Bezuidenhout);
Rachmaninoff: Prélude in C♯ minor from “Morceaux de fantaisie” op.3;
Szymanowski: 5 Mazurkas from op.50
Rubinstein’s Recording Repertoire: Music by French Composers: Chabrier (Scherzo-valse from 10 Pièces pittoresques), Fauré (Andante con moto from 3 Nocturnes op.33), Milhaud (Nos. 5, 9, 11 from “Saudades do Brasil”, op.67), Poulenc (Napoli, 3 Mouvements perpétuels, Intermezzi Nos.2 & 3)
Rubinstein’s Recording Repertoire: J.S. Bach’s Chaconne in D minor (from the Partita for violin solo, BWV 1004), arranged for piano by Ferruccio Busoni
A “statistical overview” over the recordings on the 142 CDs included with the box set “Arthur Rubinstein, The Complete Album Collection”
Arthur Rubinstein, “The Complete Album Collection” (a first look);
Busoni vs. Bach? — Arthur Rubinstein / Ton Koopman, Toccata, Adagio and Fugue in C major, BWV 564
(…) In the title I used “digital music collection” — this is a more accurate description, for two reasons: not all this music was bought in the form of CDs — some of these were MP3 or equivalent purchases, plus, the CDs for me are more of an archival medium — the active part of the collection is in my computer…