So, I think that there is definitely a "style" of music for k-pop. Like a lot of styles, it's kind of fuzzy and hard to define, but you kind of know it when you hear it. I think it's particularly complicated because I think the defining feature of k-pop is hybridisation.
For a point of comparison, j-pop can sound like literally anything, it encompasses all genres. But a given j-pop song will tend to stick to that genre, right? Whereas, Seo Taiji's very first single switched between acid house, new jack swing and even metal. At it's core, k-pop is an outgrowth of hip-hop, and maintains two things from that genre: The desire to be at the cutting edge of technology, and the "mixing and matching". In hip-hop, it was about sampling, crate-digging, and in k-pop it's more about influences rather than direct lifting. But I don't think the genres diverge that much, and it's interesting that many of the sweetest and bubbliest k-pop songs will have raps and strong rhythms.
Also, I think there's a difference between k-pop as a style of music, and k-pop as a category of artist. There are Japanese artists that make k-pop style music (Nizi-U, obviously, but others that I can't remember off the top of my head, including ones that have nothing to do with Korea at all). That doesn't make them k-pop artists. There are Korean artists that are making j-pop style music (C.LiTZ).
Just like Tortoise were an American band that, now and then, made krautrock. And there are artists around the world that make Americana.
So to answer your question:
Vcha - an American pop group that makes k-pop
Kaichi - a British pop group that makes k-pop
Nizi-U prior to their Korean debut - A J-pop group, with their style of j-pop being k-pop, in the same way that Babymetal are a j-pop group where their style of j-pop is metal
XG - ehhh, I'm not sure about this one. I remember their earlier songs being very k-pop, but I've heard stuff recently that is very American rnb. But I don't know them well enough tbh.
Blackswan - a k-pop group that makes k-pop music. This is obvious. But Fatou's solo work is "k-pop idol making non-k-pop music". I'd say maybe BTS solo work also falls into this, not just the rapline, but the Jungkook singles that I heard. Suzy's last song wasn't k-pop, either.
For a point of comparison, j-pop can sound like literally anything, it encompasses all genres. But a given j-pop song will tend to stick to that genre, right? Whereas, Seo Taiji's very first single switched between acid house, new jack swing and even metal. At it's core, k-pop is an outgrowth of hip-hop, and maintains two things from that genre: The desire to be at the cutting edge of technology, and the "mixing and matching". In hip-hop, it was about sampling, crate-digging, and in k-pop it's more about influences rather than direct lifting. But I don't think the genres diverge that much, and it's interesting that many of the sweetest and bubbliest k-pop songs will have raps and strong rhythms.
Also, I think there's a difference between k-pop as a style of music, and k-pop as a category of artist. There are Japanese artists that make k-pop style music (Nizi-U, obviously, but others that I can't remember off the top of my head, including ones that have nothing to do with Korea at all). That doesn't make them k-pop artists. There are Korean artists that are making j-pop style music (C.LiTZ).
Just like Tortoise were an American band that, now and then, made krautrock. And there are artists around the world that make Americana.
So to answer your question:
Vcha - an American pop group that makes k-pop
Kaichi - a British pop group that makes k-pop
Nizi-U prior to their Korean debut - A J-pop group, with their style of j-pop being k-pop, in the same way that Babymetal are a j-pop group where their style of j-pop is metal
XG - ehhh, I'm not sure about this one. I remember their earlier songs being very k-pop, but I've heard stuff recently that is very American rnb. But I don't know them well enough tbh.
Blackswan - a k-pop group that makes k-pop music. This is obvious. But Fatou's solo work is "k-pop idol making non-k-pop music". I'd say maybe BTS solo work also falls into this, not just the rapline, but the Jungkook singles that I heard. Suzy's last song wasn't k-pop, either.