21 - Blackpink
2× Diamond (320k): Kill This Love
Diamond (160k): Ddu-Ddu Ddu-Ddu, Sour Candy, How You Like That, Ice Cream, Shut Down
3× Platinum (120k): Lovesick Girls, Pretty Savage
2× Platinum (80k): Forever Young, Pink Venom, Typa Girl
Platinum (40k): Don't Know What To Do, Bet You Wanna, Love to Hate Me, Crazy Over You
Gold (20k): Really, See U Later, Kick It, Hope Not, You Never Know, The Girls
9 - BTS
Diamond (160k): My Universe
Platinum (40k): Lights, Stay Gold, Your eyes tell, Film Out, Bad Decisions
Gold (20k): Don't Leave Me, Let Go, Airplane Pt. 2 - Jp Ver
6 - Lisa
Diamond (160k): Money
2× Platinum (80k): Rockstar
Platinum (40k): Lalisa, SG, New Woman
Gold (20k): Shoong
4 - (G)I-DLE
Platinum (40k): Oh my god
Gold (20k): Uh-Oh, Lion, Hwaa
3 - Jennie
Diamond (160k): One of the Girls
3× Platinum (120k): Solo
Platinum (40k): You & Me
3 - Jimin
Platinum (40k): Vibe, Angel Pt. 1
Gold (20k): Angel Pt. 2
2 - PSY
10× Diamond (1.6M): Gangnam Style
Platinum (40k): Gentleman
2 - Rosé
Platinum (40k): On The Ground, Gone
2 - Jisoo
Platinum (40k): Flower
Gold (20k): All Eyes On Me
2 - Taeyang
Platinum (40k): Vibe
Gold (20k): Shoong
2 - TXT
Gold (20k): Crown, Can't You See Me
2 - Somi
Gold (20k): What You Waiting For, Dumb Dumb
2 - Suga
Gold (20k): SUGA's Interlude, Girl of my Dreams
2 - Ateez
Gold (20k): Wonderland, Bouncy
1 - RM
Platinum (40k): Seoul Town Road
1 - Twice
Gold (20k): Fancy
1 - SuperM
Gold (20k): Jopping
1 - NCT 127
Gold (20k): Kick It
1 - Jung Kook
Gold (20k): Dreamers
Songs are certified automatically in Brazil as long as the artists are signed fully to a western label, which is why only BTS's Japanese releases and collabs are certified since they still have not signed a full contract under a western label, I don't think there's any other major group not signed to a western label yet so this should be accurate except for BTS and the 7 members' solo releases.