I also don’t have an inner voice. Nothing that says ‘do this, don’t do that’. It’s hard to describe but the inside of my head feels like:
A wall of text.
Yep, I perceive the world mostly verbally. This may be why I find reading very natural.
As an autistic person, I used to struggle with direct speech when I was younger because I could not translate my thoughts (which feel like academic writing in my head) to direct, spoken speech.
And then doing that in the several languages I was brought up in.
Some people think you can possibly ‘think’ without visuals or voices or loud thoughts, but there’s a reason I do most of my thinking through writing. It feels far more direct and easy for me.