The list doesn't look like a layman crowd pleaser to me. The general public would most likely sleep through a number of the selections. So what you define as "substance" is not a large factor in the general public, they much prefer hear something that doesn't take up their time and even more would like to hear something that is familiar to them, it is not that overly complicated for the vast majority of people.
This might interest you if you are focused on classical piano:
https://en.wikipedia.org/wiki/Classic_100_Piano_(ABC)
Sorry pianostreet doesn't seem to like URLs which end with a ). Just click the link next to: DID YOU MEAN when you follow the link. I've copy pasted the list below anyway, but there is more info in that link. This list was generated by votes cast by almost 10,000 listeners to the classical music station in Australia, so you are getting a crowd of classical music lovers here, not the general public.
100 Pärt Für Alina
99 Schumann Arabesque in C, Op. 18
98 Ravel Sonatine (1905)
97 Schubert Impromptu No. 2 in A-flat major, D. 935/Op. 142
96 Albéniz Iberia
95 Liszt Paraphrase on themes from Verdi's Rigoletto
94 Grainger "Handel in the Strand"
93 Schubert Moments Musicaux, Op. 94 D. 780
92 Chopin Andante Spianato in G, Op. 22
91 Brahms Waltz in A-Flat, Op. 39 No. 15
90 Schubert Ständchen, No. 4 from Schwanengesang, D. 957 (transcribed by Liszt for piano)
89 Joplin Solace
88 Brahms Rhapsody in G minor, Op. 79 No. 2
87 Chopin Prelude No. 4 in E minor, Op. 28 No. 4
86 Beethoven Piano Sonata No. 26 in E-flat Les Adieux, Op. 81a
85 Beethoven Diabelli Variations, Op. 120
84 Ravel Le tombeau de Couperin
83 Mozart Twelve Variations on "Ah vous dirai-je, Maman", K. 265
82 Chopin Piano Sonata No. 3, Op. 58
81 Beethoven Piano Sonata No. 31 in A-flat, Op. 110
80 Messiaen Vingt regards sur l'enfant-Jésus
79 Debussy Arabesque No. 1
78 Chopin Étude Op. 25 No. 1 in A-flat major
77 Chopin Barcarolle in F sharp, Op. 60
76 Tchaikovsky The Seasons
75 Schumann Fantasie in C Major, Op. 17
74 Mozart Fantasia in D minor, K. 397
73 Shostakovich 24 Preludes and Fugues
72 Chopin Nocturne No. 20 in C sharp minor, Op. posth
71 Brahms Variations and Fugue on a Theme by Handel, Op. 24
70 Schubert Impromptu No. 2 in E-flat major, D. 899/Op. 90
69 Satie Gymnopedie, No. 3
68 Chopin Nocturne in C minor, Op. 48 No.1
67 Blake "Walking in the Air"
66 Bach, JS Italian Concerto, BWV 971
65 Sculthorpe Left Bank Waltz
64 Liszt Un sospiro, Concert Etude No. 3 in D-flat major
63 Granados The Maiden and the Nightingale from Goyescas
62 Beethoven Piano Sonata No. 30 in E major, Op. 109
61 Ravel Gaspard de la nuit
60 Chopin Piano Sonata No. 2 in B-flat minor, Op. 35
59 Chopin Nocturne No. 8 in D-flat major, Op. 27 No. 2
58 Bach, JS Chaconne in D minor from Partita No. 2 for Solo Violin, BWV 1004 (as arranged by Busoni)
57 Satie Gnossienne, No.1
56 Chopin Berceuse in D-flat major, Opus 57
55 Ravel Pavane pour une infante défunte
54 Liszt Consolation No. 3 in D-flat major (Lento placido)
53 Chopin Nocturne No. 1 in B-flat minor, Op. 9 No. 1
52 Chopin Ballade No. 4 in F minor, Op. 52
51 Beethoven Piano Sonata No. 17 in D minor, "The Tempest", Op. 31 No. 2
50 Schubert Impromptu No. 3 in B-flat major, D. 935/Op. 142
49 Joplin "The Entertainer"
48 Rachmaninov Prelude in G Minor, Op. 23 No. 5
47 Chopin Prelude No. 15 in D-flat, "Raindrop"
46 Nyman "The Heart Asks Pleasure First" from The Piano (soundtrack)
45 Chopin Polonaise in A major, Op. 40 No. 1, "Military"
44 Schumann Of foreign lands and people from Kinderszenen, Op. 15
43 Schumann Carnaval, Op. 9
42 Mozart Piano Sonata No. 16 in C, K 545, Sonata Facile
41 Debussy Prelude No. 10, La cathédrale engloutie (The sunken cathedral)
40 Cage 4′33″
39 Beethoven Piano Sonata No. 29 in B-flat, Op. 106, Hammerklavier
38 Schumann Widmung, Liebeslied, S. 566 (transcribed by Liszt)
37 Liszt Benediction de Dieu dans la solitude from Harmonies poétiques et religieuses
36 Liszt Liebestraum No. 3 in A-flat, S. 541 / III
35 Chopin Etude Op. 10 No. 12 in C minor, Revolutionary Étude
34 Rachmaninov Prelude in C sharp Minor, Op. 3 No. 2
33 Liszt Hungarian Rhapsody No. 2 in C sharp Minor, S.244/2
32 Brahms Intermezzo Op. 118 No. 2 in A major
31 Jarrett The Köln Concert
30 Liszt Grandes études de Paganini, No. 3 in G sharp minor, La Campanella
29 Chopin Étude Op. 10 No. 3 in E
28 Liszt Piano Sonata in B minor, S. 178
27 Debussy Prelude No. 8, La fille aux cheveux de lin ("The Girl with the Flaxen Hair")
26 Beethoven Sonata No. 32 in C minor, Op. 111
25 Schubert Impromptu No. 4 in A-flat major, D. 899/Op. 90
24 Bach, JS Jesu, Joy of Man's Desiring (piano transcription by Myra Hess)
23 Sinding Rustle of Spring
22 Schubert Fantasie in C major, Op. 15 (D. 760), Wanderer Fantasy
21 Mozart Piano Sonata No. 11 in A major, K. 331
20 Chopin Ballade No. 1, Op. 23
19 Grieg Bryllupsdag på Troldhaugen (Wedding Day at Troldhaugen)
18 Chopin Nocturne No. 2 in E-flat major, Op. 9 No. 2
17 Schumann Träumerei from Kinderszenen ("Scenes from Childhood"), Op. 15
16 Chopin Polonaise in A-flat major, Op. 53, "Heroic"
15 Beethoven "Für Elise"
14 Schubert Fantasia in F minor for piano four hands, D. 940 Op. 103
13 Chopin Fantaisie-Impromptu in C sharp minor, Op. 66
12 Beethoven Piano Sonata No. 21 in C major, Op. 53, Waldstein
11 Mussorgsky Pictures at an Exhibition
10 Beethoven Piano Sonata No. 23 in F minor, Op. 57, Appassionata
9 Schubert Piano Sonata No. 21 in B-flat major, D. 960
8 Bach, JS The Well-Tempered Clavier
7 Allen Chopsticks
6 Schubert Impromptu No. 3 in G-flat major, D. 899/Op. 90
5 Beethoven Piano Sonata No. 8 in C minor, Op. 13, Pathétique
4 Satie Gymnopédie No.1
3 Debussy "Clair de lune" from Suite bergamasque
2 Bach, JS Goldberg Variations
1 Beethoven Piano Sonata No. 14 in C-sharp minor, Op. 27 No. 2, Moonlight