People are indeed complex. The first type of person described specifically is rare, but what is more common is a dangerous combination of aggressiveness and charm.

Tying back to the OP, I think an internal monologue is valuable. If you don’t have one, that’s out of your control. However, I think it encourages pro-social behavior on the margins. Using your internal voice is quite literally introspection. It can make you feel bad about a potential course of action, preventing you from doing it. It can also make you feel worse about something bad you did, by replaying it in your head. Too much of that can bog you down, but I think it’s an important part of the self-policing toolset. I believe reflective people are more trustworthy (not that internal voice = reflection).