As someone who has thought that I've had aphantasia for the past six or seven years (thank you hn for teaching me about aphantasia), I'm going to give this a shot.
Yer I think I have aphantasia too. I don't see images, but I feel like I can describe things which forms a picture that I can't see but I know.
Anyway, at the very start of my 10min of ganzflicker I think I could see some very faint "wireframe" lines of no shapes in particular (just like * patterns), but these went away after a minute or so, and then it was just flashing colours, but the colours kept changing, and they were mostly reds, pinks, blues, yellows. Rarely green.
I'm in the same camp, thinking I probably have aphantasia.
Before I read about it I didn't call it anything because I had no concept that there was anything lacking in my experience. I thought it was just how everyone's mind worked. I had no idea that people could actually see things that they visualized. I had always thought that the term "visualize" was just an exaggerated metaphor for imagining. For example I can imagine a little island in a field of blue ocean with a palm tree growing out of it just fine, I can conceptually place the objects around in this imaginary scene and have a sense for where the things are in relation to one another and what shapes and colors they are, but I can't for the life of me "see" a single thing no matter how much I focus on it. It might sound contradictory but I don't know how else to describe it.
I have only experienced something that sounds like how normal folks see in their minds eye once, on the cusp of falling asleep, hypnagogic hallucinations began but I was somewhat in control of what I was seeing, I could change the image at will to whatever I imagined. It lasted but a couple of minutes before I fell asleep. Someone that has a normal mind's eye - and has also experienced the pre-sleep hallucinations - would have to tell me if my experience was similar to a normal imagination though. It could be that my hypnagogic episode was far more vivid than a typical person's visual imagination during normal waking hours though, too, who knows?
I did feel very jealous though after that episode thinking that most people probably have such an ability to visualize like that while awake.
