That's my impression too, that my thoughts are a hybrid, where I'll think in a rapid sequence of whole concepts and visual flashes, and then summarize that in my inner voice "for the record", as a jumping-off point for the next batch of thoughts. But I don't have much control over this, as my inner voice is hard to shut up for any length of time, always giving a running narrative.

Yeah I’m the exact opposite, thought is almost entirely auditory.

I'm essentially thinking out loud in my head constantly.

Like the response from the UltraSane: my thinking is and always was 100% made of internal language-based chain of thought ("imaginary talking to myself"), with some amount of introspection / meta reasoning when problem is particularly hard. This article indeed reads to me a bit like someone proposing a physical storage medium inspired by those pictures of little squares traditionally used as "save" icon, without realizing that this digital representation was in the first place based on an existing real world thing.

Anyway, a surprising related observation is that rubber ducking by describing the problem to quiet listener still often helps me, which suggests that internal chain of thought makes intuitive shortcuts that sometimes are counter productive, while talking to another person creates subconscious pressure to make the thoughts fully complete.

Curious whether the lack of audible inner monologue is a benefit for you?

I feel like I'm the opposite, where most of my thinking is done in inner English, which feels slow. I.e. as opposed to instantly realizing the result of deep subconscious processing or something, I usually go the slow language way, if you get what I mean.

We focus/function via the inner monologue. It doesn't just do its own thing while we're trying to focus or get something done, it walks through the issue and comes up with solutions and then criticizes them and iterates, and as far as we're concerned, that's us solving the problem.

Anendophasia? Fair number of people have this.