Let's choose one discography by Kpop generation.
I did it for girl groups, boy groups and female soloists but feel free to do it too for male soloists or to skip one or two depending on what you listen and know well. I also posted my favorite album for each group and left out the first generation.
Second generation : Girl's Day
Honorable mentions : f(x), Brown Eyed Girls
Third generation : Red Velvet
Honorable mentions : Dreamcatcher, Oh my girl, Twice and Mamamoo
Forth generation : (G)I-dle
Honorable mentions : Purple Kiss and Cherry Bullet
Second generation : Infinite
Third generation : BTS
Forth generation : Ateez
Second generation : IU
Honorable mention : Taeyeon
Third generation : Ailee
Honorable mention : Joy and Wendy
Forth generation : Hynn (She debuted in 2018 and is doing well digitally in Korea, try one of her songs please)