Suggest a book for my classic reader boyfriend!

Hi!

My boyfriend almost exclusively reads classics but is wanting to branch out and start reading some more recent releases/modern books!

From what I can tell he is pretty open to try anything but is especially interested in books that we will look back at in 100-200 years and refer to as the classics of this time. He said he likes interesting stories as well and doesn't particularly see the appeal in reading the kind of story that has been written and re-written 100 times before (which actually sparked a very interesting conversation about how the the human experience never really changes and the positives of books with similar stories to make them accessible for different generations, David Copperfield/Demon Copperhead was a big example) so would like something that is a bit unique, or that blew your mind a bit the first time you read it

He said his top 5 books would probably be (in no particular order): Count of Monte Cristo, 1984, The alchemist, Ready player one, Great expectations.

He's just finishing up Frankenstein at the moment, and is wanting something from the last 25 years (ish) as his next read!

It would be a bonus if anyone has any suggestions for a book I could read and annotate for him as one of his Christmas presents!!

Thankyou!!