If we go by just the mediums of games and anime, there are maybe half a dozen "legendary masterpieces" per decade that inspire people and are remembered and still consumed in the future, while the hundreds to thousands of "okay" to outright garbage pieces were left mostly forgotten by memory and history. And that's just stuff in our direct lifetime, in a century or less they will be truly lost to time by being too milquetoast for anyone to bother cataloguing their existence outside one line indexes.

Given that humans don't change much, I'd say the escapism of the past that escaped the annals of history would be the legendary and mythic ones because of how powerful and timeless. Not that they were all that existed.