Just for a laugh, I thought I'd compare the film simulations from my X100VI with that produced from Capture One and Adobe Photoshop (ACR).
So, I set up a small table with some natural light and placed various coloured articles on it. Then, for each colour simulation in the camera, I took one picture (Raw and JPG) setting the aperture at F8 and letting the camera deal with the rest. I then copied the files to my PC and, for each RAW file, I set it to the same simulation as the JPG and wrote out a new JPG file. I did this in Capture One and Photoshop. Photoshop didn't have all the simulations, so for some, it was just C1 against in-camera JPG.
The results were not quite what I expected. Photoshop had a closer match to the in-camera JPGs than Capture One. There isn't much in it, but it is noticeable.
Anyway, here are the pictures. Have a look yourself and see what you think. I've resized them but if you want to see the full size or raw ones, they can all be found here 1drv.ms/f/s!AiCLdrrfkdGRrX1EnWL2QccJThtd?e=liTzKR - some comparisons are below.
Provia Std ((no 45)
JPG from camera
Velvia (no 46)
JPG from camera
Classic Chrome (No 48)
JPG from camera
Reala Ace (No 49)
JPG from camera
I think you get the idea. I haven't uploaded the rest here - you can find them in the Dropbox link above.
50 is Pro-Neg Hi
51 is Pro-Neg Std
52 is Classic Neg
53 is Nostalgic Neg
54 is Eterna
55 is Eternal Bleach Bypass.