Hello, I've created some HaldCLUT profiles based on Fuji's film simulations that work great with Affinity Photo's LUT adjustments.
Simply create a LUT adjustment, select "Infer LUT" and in the first dialogue pick "Hald CLUT Identity 12.png" and in the second your chosen simulation. You can then save the adjustment as a profile for quick use in the future.
You can read more about them here: http://blog.sowerby.me/fuji-film-simulation-profiles/
Enjoy!
Fuji XTrans II HaldCLUT.zip