All of these "Classic Rock’ albums could be considered Top 100 entries. I selected one album from each year of the 1970’s since IMO that defines "Classic Rock". Yes, all of these albums make my personal Top 100 list, FWIW I selected 3 albums from 1971 which I consider the strongest year of the 1970’s. I also avoided(tried?) any song that was released as a 45rpm single to make sure these were "deep" tracks.
1970-Grateful Dead-American Beauty-Attics Of My Life
1971-Alice Cooper-Love It To Death-Black Juju
Don Mclean-American Pie-The Grave
The Who-Who’s Next-My Wife
1972-Steely Dan-Can’t Buy A Thrill-Midnite Cruiser
1973-Montrose-ST-Make It Last
1974-Kiss-ST-Black Diamond
1975-Fleetwood Mac-ST-Crystal
1976-Bob Seger-Night Moves-Sunburst
1977-Heart-Little Queen-Love Alive
1978-Van Halen-ST-Atomic Punk
1979-The Knack-Get The Knack-Lucinda