I did a bit of Google research, in terms of global popularity yes K-pop is more widely adopted.
I think each has its own charm. I mean K-pop usually have girlgroups or boygroups, which heavily invested in singing and dancing (i.e those Blackpink and BTS). Sometimes K-pop use other languages too: English is always there, some groups have Japan version(s) songs, some even use Spanish/France.
Meanwhile J-pop is kinda "contained" in Japan and more common concepts are bands (anybody know official Higendaism, one ok rock, etc ?) or just pure vocals, such as Yoasobi.
I don't know if Jpop idols also have Korean version(s) of their songs.
Since I'm not that into anime nowadays maybe I don't know much about J-pop.
i personally listen to straykids, although they are kpop, they have alot of japanese songs and infact have a whole japanese album, even if you like jpop i highly recommend [their japanese album is hollow btw but there are many songa in a few other albums that are japanese or some songs have a japanese version to them]
YEAH STRAYKIDS!!! STRAY KIDS EVERYWHERE ALL AROUND THE WORLD YOU MAKE STRAY KIDS STAY!!!!!!!!
i personally listen to straykids, although they are kpop, they have alot of japanese songs and infact have a whole japanese album, even if you like jpop i highly recommend [their japanese album is hollow btw but there are many songa in a few other albums that are japanese or some songs have a japanese version to them]
Stray Kids Japanese albums are incredible I think they hinted a Japanese comeback recently?
