(which I'm still sorting through for clarity, relevance, mouthfeel...)
Do You Have an Inner Voice?
The Puzzle of the Silent Mind
Anaduralia: Understanding the Phenomenon of a Silent Mind, Thinking without words
What is mental imagery, aphantasia, hyperphantasia?
Aphantasia, Hyperphantasia and the Mind's Eye
What it's like living without an inner monologue
Q&A with a person who does not have an internal monologue
Why Some People Don't Have an Inner Monologue
What Are Thoughts Like with No Inner Monologue and a Blind Mind's Eye?
The Science of Thinking | Internal Monologues
I have APHANTASIA (and you may too...without realising it!)
How to know if you have aphantasia or hyperphantasia | Measuring your mind's eye
Blind Mind's Eye - The Science of Aphantasia with Dr. Adam Zeman
"There's Not Enough Talk On How Weird Neurotypicals Are"