as listed in this post at Book Riot. These were nominated by readers, ranging from 85 for the first listed to 21 for the last.
1. Pride and Prejudice by Jane Austen
2. Ulysses by James Joyce
3. Moby-Dick by Herman Melville
4. War and Peace by Leo Tolstoy
5. The Bible
6. 1984 by George Orwell
7. The Lord of the Rings by J.R.R. Tolkien
8. The Great Gatsby by F. Scott Fitzgerald
9. Anna Karenina by Leo Tolstoy
10. Catcher in the Rye by J.D. Salinger
11. Infinite Jest by David Foster Wallace
12. Catch-22 by Joseph Heller
13. To Kill a Mockingbird by Harper Lee
14. Fifty Shades of Grey by E.L. James
15. Jane Eyre by Charlotte Bronte
16. Crime and Punishment by Fyodor Dostoevsky
17. Wuthering Heights by Emily Bronte
18. Great Expectations by Charles Dickens
19. Harry Potter (series) by J.K. Rowling
20. A Tale of Two Cities by Charles Dickens
I will not pretend to have read those I have not. In my cases, I started Wuthering Heights when I was 12 and found it boring and did not finish, and as as result did not read Jane Eyre. I have read none of the Harry Potter series, and also have not read the James or the Wallace. I have read everything else, some several times, although I cannot claim that when I read Ulysses that I fully grasped it.
That means I read 15, of which I grasped 14, and tried one other.
Don't know what any of that means.
What about you?