Loads more ground breaking than The Beatles :) very few I can think of in popular music other than Frank Sinatra, Elvis and Led Zep, who referenced blues music and made it mainstream. Brian Wilson made his masterpiece Pet Sounds in response to Rubber Soul and when he heard Sgt Pepper more or...
Got another - Budgie, which probably may be a bit heavy, great three piece from Wales saw them at the Brighton Top Rank. Another from that time Nazareth who I also saw there. Be-Bop Deluxe a few years later at the Brighton Centre, Axe Victim a great album, especially the track No trains to Heaven.