Correct me if I'm wrong on these b-side/side track rankings...

Red Velvet

-

1. Body Talk

2. You Better Know

3. Kingdom Come

4. I Just

5. Time To Love

6. Little Little

7. Attaboy

8. Light Me Up

9. My Second Date

10. Zoo

BTS (songs w/all members)

-

1. Butterfly

2. A Supplementary Story: You Never Walk Alone

3. Moving On

4. Silver Spoon/Baepsae

5. Let Me Know

6. Love Is Not Over (Full version)

7. Coffee

8. Pied Piper

9. 13430

10. Whalien 52

Twice

-

1. Bring It Back

2. Headphones On

3. Next Page

4. Three Times a Day

5. Truth

6. One in a Million

7. Behind the Mask

8. 24/7

9. Touchdown

10. Ponytail

Itzy

-

1. Cherry

2. That's a No No

3. 24Hrs

4. Don't Give a What

5. Ting Ting Ting

6. I Don't Wanna Dance

7. Want It?

8. Surf

9. iD

10. IT'z Summer

Exo

-

1. Artificial Love

2. She's Dreaming

3. Trouble

4. The Eve

5. Playboy

6. Cloud 9

7. Diamond

8. Sweet Lies

9. Jekyll

10. Wait

G-IDLE

-

1. Hann (Alone In Winter)

2. Put It Straight

3. Where is love

4. Lost

5. Hear Me

6. Don't Text Me

7. Dahlia

8. Maze

9. $$$

10. Give Me Your

Blackpink (assuming songs with MV's don't count)

-

1. Crazy Over You

2. Don't Know What To Do

3. Love to Hate Me

4. Pretty Savage

5. See U Later

6. Hope Not

7. Forever Young

8. Bet You Wanna

9. Really

10. Kick It

SNSD/Girls' Generation (including TaeTiSeo subunit releases)

-

1. Whisper

2. Sunflower

3. Echo

4. Fan

5. Check

6. Fire Alarm

7. Mistake

8. XYZ

9. Boyfriend

10. One Last Time