I remember an article that used (Spotify?) play trends to project this, and at the time they thought Pompeii by Bastille would be the one with longevity, while a few other hit songs by big names would be forgotten. I can't find it now.
IIRC the basic idea was that genuinely memorable songs peak less hard and only fade very slowly, while trendy songs crash as everyone moves on to the next shiny thing marketers put out.