First of all, you can’t talk about color accuracy, as the SOOC jpeg is not “color accurate”, the one you showed has Velvia film simulation, and maybe did you also tweak the saturation and contrast in camera on top of that.
Anyway, here’s a version which I think quite close to the SOOC jpeg:
Rawtherapee: XT2S5663.jpg.out.pp3 (10.5 KB)
I own an X-T2 as well, and in RT I have a dynamic profile which loads an X-T2 dcp profile, but deactivates the built-in Tone curve and Look table, and instead loads a custom Tone curve in perceptual mode in the Exposure tab.
That’s basically what I used to process your raw file, but since your SOOC jpeg had Velvia applied, I also applied a Velvia Film simulation (HaldCLUT from this excellent set: https://discuss.pixls.us/t/new-fujifilm-xtrans-film-simulations/6333) and profiled lens correction.