Nmixx popularity now solely because of company stans and Sullyoon visual. Their debut is a failure and prove nothing about their real talents.
No current boy groups deserve the 'national boy group' title. But if we're force to name someone, Txt will get it because they are known better than most bg now locally and also popular internationally.
Ive probably become the first 'national girl girl' that coming from non big 3.
Itzy will be in the position of Red Velvet which is overshadowed by another group that debuted later than them like Bp and Twice. Being the first girl group to debut among big companies is a disadvantage to them.