Yeah, I cut my own teeth on vector image editing with CorelDRAW myself back in the late 90's. I'll admit, I've never tried AfterShot Pro as I could never justify the price (don't do it enough, and Darktable did everything I needed for free), but I've read good things about it over the years.
The rest, you've probably never heard of them because of the OS platform circle you kind of run in. They are rather big and established software apps in the F/OSS community (free and open source software), but not as well known by Mac users. Given the OS you're running, however, I might recommend against getting your hopes up over digiKam. It's not that it isn't a good editing suite under Linux, it's just that I've never really met a KDE/Qt-library based application that I really liked to run under OSX over the years despite their decade-long efforts at OSX support and integration. Granted, at this point it has been a couple years since I last tried doing so, so your mileage may vary, but....