These are the 8 lists that Joel Patrick at medium.com amalgamated and culled to create this 'ULTIMATE LIST' (updated January 2019):
The Guardian's The 100 Greatest Novels of All Time
The BBC's Big Read Top 100
Amazon's 100 Books to Read in a Lifetime
Harvard's Book store top 100
Modern Library's 100 Best Novels
Time's All-Time 100 Novels
The Telegraph's 100 Novels Everyone Should Read
The Art of Manliness' 100 Must-Read Books
I have expanded the list to 157 items by including all books that appeared on at least 2 of the 8 lists (there is a link to a detailed spreadsheet at the source URL). Thanks to the original poster Anshu Kumari.
