Compared to Bitwig, since that's what I use on both Macs and Windows PCs. Distro was Ubuntu Studio, which is tooted as an OS "configured for best performance for various purposes: Audio, Graphics, Video, Photography and Publishing", and comes with Jack.
I mean I can't give you my company code but my GitHub is not difficult to find. That said, I'm a little confused by your offer, because I feel like this doomed to fail because you don't have my context as to what I want improved?
Lightroom vs Gimp does not make sense, should be Gimp vs Photoshop if anything.
For photos you can use digikam + darktable/rawtherapee.