@sjmc1989 @stranger_in_a_strange_land I shan’t disappoint!
The best thing to look at that incorporates all of what you are interested in are his piano concertos.
Mozart’s most famous concerto (arguably) is Piano Concerto No. 20 in D minor, K 466. (Sorry, it takes a while for the piano to come in). However, #20 is the only one in a minor key! Check out Piano Concerto No. 21, No. 19, No. 9, and No. 8. I’m sure they’re all good, but those are the ones I am most familiar with.
If you like that, I would also suggest looking into his piano sonatas. I’m sure you’ve heard it before, but the third movement of Piano Sonata No. 11 in A major is really good and it’s in a minor key. I also recommend Piano Sonata No. 15.
Mozart’s symphonies are also worth looking into. In particular, I recommend Symphony No. 25 in G minor, Symphony No. 40 in G minor, Symphony No. 41 in C major Jupiter, and my personal favorite Symphony No. 30 in D major. There are 41 in total.
As the others said, his operas are worth looking into as is the Requiem in D minor.
That’s a start, at least. Hope you end liking his music because it’s quite amazing. :)