I don't recall dreaming much at all. Once every few months, maybe (I'm sure I'm dreaming, I just have no memory of it. When I do have a memory of a dream, it's the same as any other memory (just a thing that I know "happened").

It wouldn't surprise me if there was a visual component to dreaming though, even for those of us that can't generally visualize things. Dreaming is a very different regime for your brain, where it is _actually_ engaging the bits that get engaged when you're awake and doing things, it just suppresses the actual motor output.