So, I’ve tried the Uchimura curve on a few images (it was applied per-channel). I loaded them into darktable, exported as 32-bit linear Rec2020 floating-point TIF, tone-mapped them, and then gamut-compressed them to the sRGB gamut (using gradual compression to bring out-of-gamut values inside the gamut).
DSC09445 from Comparing filmic color science v5/v6
The fire image from Comparing filmic color science v5/v6 - #72 by age. I brightened this a bit using linear exposure in dt.
c_payne_J001_C001_08178N_001.aces.exr from https://www.dropbox.com/scl/fo/dzjhto8kejh35vu0mcvdu/AKAuQyd8Qlr24qm8Gl9X08w/c_payne_J001_C001_08178N_001.aces.exr?rlkey=mhbf9l2qy8r8fav3ajn7t1a15&dl=0
