Usually i find the default/light options too bright and the dark options too dark.
I fine tune it my self, there is a room for interpretation over basic middle gray as lightness value, you can colorize it with subtle bluish, greenish or warm colors.
Soundtrack Pro example is well balanced implementation. When they released it I thought that this will be the default pro UI theme in MacOS.
But iPhone came around and Apple left all Pro Software and Audience behind.
The idea of middle gray as a starting point for UI is well established but not popular nowadays in the world of high contrast and saturated color palettes.
For the moment the combination is to apply Breeze Dark default workspace theme, Nordic-Darker icon pack, SF Pro Display Medium and this color theme.
Finally after long years of fiddling with chaos of markdown files I invested the time and switched to Emacs and org-mode. Affinity Designer is running fine under VM, Figma-linux is delight to work with, KDE with middle gray color palette ( as all professional software must be, not dark-themed /check the pinnacle of professional UI design - Soundtrack Pro for reference/) and ARCH.
Gnome is to childish for my taste, Sway is to minimal. Running old version of Plasma without KUserFeedback and for the first time in many years feeling in full control of my desktop. I got tired from configuring Little Snitch and recent Apple move towards scanning macOS was the tipping point.
Sadly there is no replacement for Capture One, RawTherapee is very good, but lacks some essential tools. For this case I will build a monster air-gaped Hackintosh and call it a day.