Gaga has done her share of...well nevermind.
“Ray of Light” (1998) is my favorite Madonna album. Truly innovative in every way. (And her vocals were at her best as she had just underwent training to play Eva Peron in Andrew LIoyd Weber’s “Evita.” )
Songs like “Power of Goodbye” is one of her most mature pieces of work— and you don’t hear artists sustain a progressive career long enough to attain to a point like that these days.
“Confessions in a Dancefloor” (2005) also a stunning achievement. And I went to her concert for that tour. Did take a lot of beats from ABBA though.