enemies tables need to support different enemies having the same sprite ID but different lowtag or palette

this is most noticeable in Blood, there are many types of cultists (sprite ID `2820`) 

Bloom actually uses the lowtag as the key for their dict https://github.com/thomasrogers03/bloom/blob/5d49c18a241216aca354aa79971940691e6f33b4/bloom/resources/sprite_types.yaml#L755-L777

but I should probably just not be using a key at all?