…so, after a bit of research, I believe the Caramella Girls stopped using the Caramell name just before the end of 2019, both because of some Wayback Machine digging I did on YouTube, and a bit of iTunes/Apple Music knowledge from from @yindesu.
I’ve also found that most of the Caramell versions are still available on Spotify and Deezer. they don’t show up on either artist’s Spotify page, but they do show up on Deezer. Atisket doesn’t find an iTunes/Apple Music release when I look these versions up, so I don’t think those exist anymore. the Caramell and Caramella Girls versions do have different barcodes and streaming links.
I also added my first Live Bootleg release from YouTube: