I'm not familiar enough with Katseye to comment on them, but VCHA and XG are both no for me.
All of XG's members are Japanese, and all of their songs (that I've heard, can't say there isn't a B side somewhere I haven't) are in English. From what I've seen, they present themselves as an "international girl group" and that seems correct to me. All of their marketing, the concept, the songs they go for, are clearly aimed at an international audience, not that Korea isn't included in that, but they aren't targeting Korean specifically and treating international as incidental, the way most groups do.
VCHA was specifically created through an American reality show, with a concept of creating an American girl group using the kpop approach. So I view them as JYPE's collaborative approach with Republic to deliberately create a group that can (attempt to) break into the American music market, rather than their past approach of gambling on one of their existing kpop groups to try to do so (at the expense of their Korean popularity).