I know persons who were born after 1980 who listen to music from the 60s and 70s but avoid the “nostalgia” for an age they never lived in by eschewing the Billboard charts altogether.
The DJs (Northern Soul, for example) have created a new “hierarchy of hits” that have identified “dancefloor monsters” that will bring people on the floor even if they’ve never heard the song before. Some of these songs have a universal response but they aren’t “hits” in the strict industry definition of the term (and don’t always earn the publisher royalties, old vinyl pays the originator nothing), aren’t available in most big box stores (even as a boxed set), etc.
People who grew up in the 60s and 70s largely rejected/neglected these recordings for the hyped hits.
A coincidence...today some rap guy I don’t know was playing something recent the kids liked.
It was “Drift Away” and Dobie Gray was on the track. These kids were loving it and, to prove the point again, I had to tell them Gray recorded this in 1972.