We do have mobile HDR enabled. Having said that, anything that uses the Unlit shading model will not have dynamic lighting calculated for it, even if mobile HDR is enabled. We use this method to display unlit assets on lower-end devices. We then enabled lit assets case-by-case. For instance, the coins use a lit material even on low end devices, so that we can display reflection maps on them.
I’m not sure what you mean by “physical assets on the characters” - can you expand on that?