I personally think it's F(x)
-Most of SM Idolsㅋㅋㅋ
-VIXX!
-Lovelyz and their 'Innocent and sentimental' vibes
-B.A.P and SM Idols
-VIXX, Dreamcatcher, NCT127
-SHINee
-Aespa's and their crazy Kwangya concept
-AB6IX
-NCT127
-Aespa and LE SSERAFIM
-B.A.P, VIXX, Dreamcatcher, ATEEZ
-B.A.P, Block B, ATEEZ
-Billlie
-I personally think Dreamcatcher is the only group that always has a unique concept and their new concepts are always related to their previous ones
-I personally think F(x), Aespa, ATEEZ, and Dreamcatcher have unique concepts...! They're somehow very consistent with that
