Ozzy might have sung 'Rock 'n' Roll Rebel', but he's a rock/metal artist, not rock 'n' roll.
I have dozens of rock 'n' roll songs in my collection, but there's also been a lot of great music before and since (I have music from the 1930s to the present day). Despite rock 'n' roll being mainly a 1950s phenomenon, it has influenced song themes of many later artists, even though they've mainly been rock or pop songs. Here's a few that I have:
Joan Jett was obviously fond of the genre when she sang 'I Love Rock 'n' Roll'.
Billy Joel said 'It's Still Rock and Roll to Me'.
Bob Seger sang about 'Old Time Rock & Roll'.
Led Zeppelin just did 'Rock and Roll'.
AC/DC told us that 'Rock And Roll Ain't Noise Pollution'.
Prefab Sprout sang about 'The King of Rock 'N' Roll'.
Oasis sang about a 'Rock 'N' Roll Star'.
Ian Dury even sang about three commonly connected themes - 'Sex & Drugs & Rock & Roll'.
And Amy Macdonald sang about 'Mr Rock & Roll'.
I wouldn't call any of these songs rock 'n' roll, and still can't think of any recent examples of that style, but maybe Danny and the Juniors were right on the soundtrack of Christine when they sang 'Rock And Roll Is Here To Stay'.