G0D is the only one whose peak era had global and domestic #1s along with the highest selling album, only to then release one of the best selling Xmas albums of all time that same year with an originally self-penned classic so I mean...
Music Box (Mariah) > *The Immaculate Collection (Madonna) > ...Baby One More Time (Britney) > True Blue (Madonna) > The Fame + Monster (Lady Gaga) > Teenage Dream (Katy Perry) = I Am...Sasha Fierce (Beyonce)
I gave Madonna an asterisk because her peak is a compilation album so it didn't really happen at once like the average studio album did.