I'm aware of these. Also aware they're based on core OpenJDK with proprietary extensions to or replacements of high level components. There were a few completel

I'm aware of these. Also aware they're based on core OpenJDK with proprietary extensions to or replacements of high level components. There were a few completely alternate implementations, but most of them have died off or exist as toys in 2020. Since they're all descendants of the same source tree, it's not very different from saying there are multiple Chromium distributions like Brave, Vivaldi, and Opera.