“Who is the greatest band?”
This is a trick question and should be “Who is the second greatest band?” since The Beatles is the correct answer.
It’s not even close really. By 1964 they had mastered writing hit 3 minute pop songs and were bigger than Jesus. And they were just getting started. At the very top of their popularity they started expanding the entire format of pop music and left the safety of the adolescent love songs where there success stemmed from and evolved musically bringing the rest of the world with them. In three years, the band went from She Loves You to Tomorrow Never Knows. From bubble gum pop to psychedelic music based on the Tibetan book of the dead while still leading the industry in record sales. Add in that even George started writing songs that weren’t just filler but became iconic hits on their own.