Creedence actually had a similar run. Bayou Country, Green River, Willie and the Poor Boys, and Cosmo's Factory were released in the span of about 18 months. (Their first album came out just 25 months before their fifth.) They all went multi-platinum and all except for the first spawned multiple singles, and they were very influential. Creedence actually outsold the Beatles in 1969, but were washed up just a couple of years later.
You've motivated me to listen to their first five, and I'm about halfway through them. For that I thank you!