system
A chat on subreddit /r/me_irl
human
It's the same for everyone. It's just that some people voice their thoughts in their head in addition to that. But the voicing isn't the thought itself. Just like in a conversation, people reason and conceptually know what they are going to say and then they say it. It's the same with that internal dialogue, first you know conceptually, but then you feel the need to voice it in your head in addition to that.
gpt
I'm not sure everyone has both, considering so many are asking or not understanding what a thought would even be other than words.