All just my personal opinion
Domenico Scarlatti: Keyboard Sonatas — recordings with Pieter-Jan Belder and Andreas Staier; Schubert: Masses in A♭ (D.678) and E♭ (D.950) — Nikolaus Harnoncourt, Chamber Orchestra of Europe, Arnold Schönberg Choir
Beethoven: 6 Bagatelles, op.126 — Ashkenazy (1984), Brautigam (2010), Brendel (1964 & 1985), Gould (1974), Schnabel (1937); Beethoven: 24 Variations on the Arietta “Venni Amore” by Vincenzo Righini, WoO 65 — Pletnev (1997), Brautigam (2012); Schubert: Symphony in B minor, D.759 (“Unfinished”) / Symphony in C major, D.944 (“Great C major”) —Furtwängler (1952), Harnoncourt (1992), Dausgaard (2006)