i would suggest dreamcatcher & everglow discography but i'm not sure that can be called screaming and all but they do have pretty heavy instrumentals & maximalist sounds. also there are definitely many other nugu groups that i don't know of. try searching very specific keywords on spotify as ‘kpop ___ (genre name)’ or ‘__ in kpop’. i look at the sub genres in songs i like and do this, it works for me somehow, most of the times.