Classic Rock 101: One Genre. Many Definitions--Many Genres, Many Definitions

https://www.liveabout.com/classic-rock-101-747979

Here's a kool web site; one that just about anyone can relate to regardless of age. If you were a student at App anytime between the '50s and the 20-teens, there's content here that'll stir a lotta fond memories. Guaranteed!

Thanks for the link. Good stuff.
How many of these would you consider classic rock?
1. Green River
2. Woolly Bully
3. Bad Company
4. The Times They Are A'Changin
5. Can't You See
6. Ode To Billy Joe