I would be very curious to hear more about what you have seen and discovered about this.
@alexfry shared with me a couple of images to roughly check what EOTF the display is using. I did some limited subjective testing among a few compositor friends, and the results are … perplexingly diverse.
I’ll share the test images here, with the disclaimer that they are difficult to read and no very scientific:
The idea is that you load the image with 1:1 pixel scale on your screen, without any color transformation, and determine which image has a better match between top and bottom. The match will be the EOTF your display hardware is using.