Complete 5 for me. Also, I have an internal voice, but that voice is just me. Basically just putting thoughts into words so that I can express them, nothing different from whatever the "I" or "self" is.
For the record: I always score very high on tests of spatial memory, those tests where you are supposed to have to rotate objects to find the answer, and stuff like that. I enjoy reading fiction; I like reading more than watching movies for the most part. And in general don't feel like I'm missing out on anything, or that aphantasia gives me any problems thinking at all. I often can't tell who someone is from seeing their face, but I think that's the autism.
Yeah, I guess for me thoughts are something happening, like a transient experience. Very hard to nail down. I wouldn't say I'm fully aware of them, they're very mysterious. I can't get an adequate grasp on them. It's very funny, as according to people like Descartes one thing you can be absolutely certain of is your mind and the ideas it contains. While my experience is that the workings of my mind are the hardest thing to understand. I like to write a lot, because if I just sort of stream of consciousness write without trying to reflect on what I'm writing, that really just lets the thoughts flow into words. And then I can read back what I've written and reflect on it and really know what I think much better than if I try to capture thought internally.
My internal monologue isn't my thoughts, it's my awareness of the thoughts, feelings, desires, etc. that are occurring and my critique of and reflection on them. I guess because thought is so vague and indeterminate, I do often try to put it into words internally, so I can pin down and get a fix on what I think; and I have to put things into words internally first before I can speak them.
I can't tell people apart from legs or asses or any of that stuff either. I just have trouble recognizing people full stop. I frequently have conversations at school and stuff with people I know I've met before, who I can tell know who I am, but that I can't ID, until sometime into the convo something clues me in and I remember (though sometimes that doesn't happen). Luckily I have a pretty memorable name, so people are always like "Hey ______," and then I don't need to say their name I just say hey back.