So many artists I would add to that list. A few off the top of my head:
James Taylor (his 8 biggest albums released in the 1970s)
Joni Mitchell (Ladies of the Canyon, Blue, For the Roses, Court & Spark, Hissing of Summer Lawns, Hejira, Don Juan's Reckless Daughter and Mingus all released in the 1970s)
Van Morrison (Moondance, His Band & the Street Choir, Tupelo Honey, Saint Dominic's Preview all in the 1970s)
Elvis Costello (My Aim is True, This Year's Model, Armed Forces all in the 1970s)
John Prine (his first 6 albums all released in the 1970s)
That's just barely scratching the surface.