I suspect I have it. When I 'visualise' things, there's no visual component to it. Instead, I'm remembering an abstract list of features that the visualisation has. For example, with a sphere, I know that it's round, probably smooth, with a surface equidistant from its centre at all points. I don't 'see' a sphere in any way though.

With a beach, I know that there's probably sunshine, there's some water, some sand, it's probably hot, maybe some wind, some waves, some seagulls. But I don't see any part of this, so if you ask me for specific details they just don't exist and I couldn't tell you whether, for example, the beach in my mind is short or long.

When it comes to faces, I can't picture them and find myself often forgetting/not recognising people with whom I'm only tangentially familiar. I couldn't describe a person's face to you at all, but if you asked 'do they have a big or small nose', I might be able to recall that (usually not though). I'm more likely to be able to recall distinct features - skin colour, hair colour, etc., than I am features where there's a sliding scale (nose size, etc.) This even applies to people close to me such as my own immediate family, partner, etc.