I"m hoping to connect with aphantasia researchers who are interested in individual differences (e.g. the presence or absence of aphantasia in congenitally blind people). I am congenitally totally blind and do have a form of aphantasia in that I'm not able to use other senses to form visual representations of the world or space around me. My conversations with other congenitally blind people shows that this is not what all of us experience; many of my blind friends can create pictorial mental images that use touch and sound. I think this is a research topic that could get overlooked because people assume that pictorial = visual, and therefore that congenital blindness automatically leads to aphantasia, when this isn't true. I have a very challenging time with orienting myself in space, and a lot of the methods out there for teaching blind people to travel rely on mental mapping to some extent.
Its not my area of research, but certainly, it appears that this area is indeed under researched. Good luck with your research Tasha.