Below are samples of film that i used in GIMP. I;m sure with minor tweaks, users can recreate or mimic the colour grading from films. Since Shotcut doesn’t support Colour Matching, this trick might be an alternative. This also can reduce the steps in Shotcut to tone down LUT made for other video editor ( not naming it but you know).
In GIMP you can isolate portion of an image (e.g face for the skin tone) using mask channel. Save it to LUT and throw it in Shotcut and watch the magic (ok, maybe not 100% accurate) in front of you! Go crazy with it…happy LUTing (if that’s a even a word)