This is base on chart success and the impact it has:
-BLACKPINK: The Album
-EXO: The War
-TWICE: FANCY YOU
-BTS: Map of the Soul: 7
-SEVENTEEN: Heng:garæ
-Red Velvet: The ReVe Festival Finale
-Oh my girl: Nonstop
These are the ones I think are accurate for other groups I really have no idea. Let’s me know if you have a different album for those groups and feel free to add new groups.