For exo you might want to check out Electric kiss, For life, Heaven, Gravity, Oasis, Jekyll, Light saber, and Been through. They are all some of my favourite B-sides

For ATEEZ you might want to check out Say my name, HALA HALA, Utopia, Dazzling Light, Wonderland, Answer, Horizon and Precious.

From their latest album, you might want to give Inception and Good lil boy a try. If you like the recommendations, I would suggest listening to their entire discography a listen.