Okay so:
For nct 127: no longer, back 2 u, angel, not alone, promise you, magic carpet ride, designer, love me now
NCT U: timeless, without you, from home, coming home, my everything
NCT DREAM: like we just met, to my first , on my way, puzzle piece, trigger the fever, dive into you, my youth, rainbow, graduation, broken melodies, walk you home, dear dream, never goodbye, ANL, sorry heart, rains in heaven (yes dream is my favorite unit sjshgshshs)
WayV: domino, horizon, stand by me, let me love you, only human, after midnight
As for NCT wish i still have yet to get into them!!!
Oh also NCT 2021: beautiful :]