Does CLZ omit the credits for photographers and models for cosplay covers by policy? I submitted a cosplay cover for Gemini Force to the core, and it was added, but the credits for the model and photographer were removed (credited as cover artist for lack of a better option), along with the cosplayers name in the variant name.
Is there a way to ensure these creators are properly credited?
There is no policy like that.
There just is no special creator role for photographers and cosplayers.
I’d be hesitant to create separate roles for those, for such a small percentage of comics. We already have way to many creator roles as it is 
Putting them as Cover Artists is certainly an option.
I totally understand not wanting to create more roles. I was just asking because those credits were specifically removed from what I submitted to Core.