My most memorable second releases are from
Led Zep
Aerosmith
Grand Funk
Lynyrd
Eagles
Elton
Wayne Shorter
Sade
Dwight Yoakam
George Straight
Lyle Lovett
Don Henley
Alice In Chains
Allman Bros
Bruce Springsteen
Nirvana
Dave Matthews
Steely Dan
Radiohead
Emmylou Harris
ZZ Top
Clapton
Guess Who
Joe Cocker
Live
Nick Drake
Rod Stewart
Santana
SRV
Sting
Van Halen
Sorry for the long list but to me these artist second albums were as good (or close) as their first (if not better)