The greatest Rock n Roll band of all time, is Led Zeppelin. One of the greatest drummers, Bonham. The epitome of rock lead singers, in Robert Plant. Perhaps the best Rock guitarist of all time, Jimmy Page.
Perhaps the perfect Rock song ever made --
Certainly in the top 5 of rock songs of all time -
After Led Zeppelin, you have the Rolling Stones, The Beatles, Queen, Pink Floyd, Aerosmith, Melallica and AC/DC. After those greats - it's tougher to know who to throw in in terms of "bands." Some might lean into Nirvana and Guns and Roses. There are some good Rock Bands, later but after the early 90s, after the Seattle Grunge scene, Rock got cancer, and over the next decade or so, it slowly metastasized, and if it's not dead now, it's certainly moribund.
If we were to move from bands to individual artists, I would be including Elvis, Jerry Lee Lewis, Janis Joplin, Grace Slick (but not the rest of the Jefferson Airplane crew), and some others, for sure.