So "prevailing opinions" have progressed beyond what Jim Dawson and Steve Propes wrote in "What Was The First Rock'n'Roll Record"?  Among the 50 candidates listed chronologically and discussed in that book, "Rocket 88" is placed 24th and "Sh-Boom" is 38th. So, chronologically speaking, I'd tend to vote for "Good Rockin' Tonight" (placed 8th) in its hit version by Wynonie Harris. 

November 20 Geoffrey Keezer - 1970 He was Art Blakey's last pianist...

For many years writers used to call the Chords' Sh-Boom the first rock 'n' roll song. But now they credit Jackie Brenston's Rocket 88.