NWA - Niggaz4life following Straight Outta Compton
Nas - It Was Written following Illmatic
Eminem - Encore following Eminem Show
Jay-Z - Kingdom Come following The Black Album
Primal Scream were mentioned already but they arguably had a second one with Evil Heat following XTRMNTR and Vanishing Point
Blur - The Great Escape following Parklife
Sufjan Stevens - Age Of Adz following Illinois (though personally I quite liked it)
Is it cheating to mention those late Velvet Underground and Door albums most people don't even count as legit?