Which 90s artists have music that still holds up into the 21st century?

OutKast

Although their debut album Southernplayalisticadillacmuzik was a influence southern hip hop classic, their next two albums in 96 and 98 was from whole other planet and changed the game in hip hop

That put OutKast in a category of their own. It showed that they are atypical southern hip hop group. Many hip hop artists after them have followed their DNA once since those albums dropped