If you’re only into bgs i recommend &team, 1verse, wayv, and ateez. If you wanna try some ggs i recommend aespa, illit, nmixx, idle. And a genderless group (one of my ults) XLOV!
Its not kpop,but if you like some psycho type of music,I recommend j-pop,for example Phantom Siita or ado! If you like more sad music,Yuna Song is really good! And if you like white girl pop id say Sharny!!
I always recommend afterschool and aoa to everyone but miss a is also very good ! though unfortunately they aren’t active anymore but they’re still amazing groups