Read the majority of these 300+ works and you'll be quite well-read as far as novels go.
I've done the drudge work for you by collating these books. They are works that appear repeatedly on different challenges that have titles containing "Greatest Novels" or similar. Of course, by nature, humans never completely agree on anything, but here goes.
--- I've cheated a little bit by including trilogies etc. as a single work.
--- I'm sure some of your favourites don't appear, but I choose on frequency of inclusion on certain lists & not on popularity with readers (other lists cover that area, including one of mine at the link).
--- As you may well know, lots of works that are not novels make it onto novel challenges. Kindly point out any of these works you consider NOT to be novels.