Beyond the data science interest, isn't this sort of charting powered by the "my time's running out and I still haven't left my mark in history" intrusive thought? Purely from a fitting perspective I'd wager the correlation is close to zero, because "major works" will be different in a century, and again changed in two. Shakespeare was not very popular in the 17th per wikipedia. As George Orwell put it, it's much easier to write when you do it for a purpose that matters to you. Hugo wrote Notre-Dame mostly to rant about architecture; creating a major work for the purpose of staving off fears of being forgotten I feel is not enough in itself