for me its Stray Kids and Seventeen. During 2nd gen, SM boy group dominating the whole industry leave no space for other group except for BIGBANG so i kinda expect the same for 3rd gen, and NCT have promising start so its kinda surprising to see Stray kids and Seventeen doing really well (especially Seventeen who also have good digital)
the vice verse is KEP1ER, considering how successful IOI and IZONE
edit: Weki Meki & Gugudan too.. damn they have Sejeong,Mina for Gugudan,Yoojung & Doyeon for WEME, all of them are popular IOI girlies (Yoojung is even the center of PD101)