I still like comic strips and dead musicians.
But another idea is that in 2013 (just before they broke the Hot 100), Billboard revealed the top 100 "hot 100" songs of all time for their 55th anniversary (any lists after 2013 are invalid to me).
The order was based on points assigned to rankings on the Hot 100, adjusted for different eras. Before SoundScan data began tabulating sales in 1991, less reliable retail and radio reports fed into calculations. The first Hot 100 chart, which blended sales and airplay data, made its debut in August 1958.
The list is here:
Most popular songs of all time: The Billboard Hot 100 longest ranking chart hits.
www.billboard.com
For some dumb reason, all rankings are 100 more than they're supposed to be, eg #1 is #101 and #100 is #200. Odd, but easy to compensate for.
But we could decide what DRC thinks the best "All-Time Hot 100 Song" is.