Apart from some things on iOS devices, I’m completely Linux for music making. Although my journey to it is maybe a bit different, as I didn’t really have an established Windows workflow I had to “replace”.
I use Ardour as my DAW for recording – have considered switching to Bitwig, but hesitant to make the investment and take the learning curve hit.
For live performance, using JACK/Patchage for signal flow management, a handful of synths (Yoshimi, Calf’s Fluidsynth host for sample-based stuff, just got Helm and like the look of it but haven’t really integrated it yet. Oh! and VCVRack), Rakarrack and some of the Calf plugins for effects, Sooperlooper for live looping, alongside lots of external instruments.