One question I have for people with internal monologues that they can hear when they read. What does the voice sound like? Is it your voice? For me, it's like a vaguely male or female voice if I only know the gender of the writer but if I know the writer's voice it is theirs.
Usually it’s a “blurry” or “fuzzy” version of my own voice (which is androgynous) reading the words quickly, if that makes sense. When I’m reading the sound is not as clear as with internal monologue / my own thoughts.