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My personal ranking would be:
1. Wannabe
This song is basically perfection, from the beat, to the chorus and hook, it's really catchy. The dance break has got to be my favorite part.
2. Not Shy
I love the funkiness of the beat, and this song may not be for everyone, but I enjoy it.
3. Icy
It also has the very signature ITZY sound, with a beat you can't really find elsewhere. The chorus is an earworm at first listen.
4. Dalla Dalla
I enjoyed this song initially, and it was a really solid and unique debut, but I found over time I got sort of bored of hearing it. It feels a bit dry to me now, but nevertheless, it's iconic.
What about you guys?