I wouldn't find it too surprising if the brain would abstract actions and actors, perhaps even the tense from thoughts and sensory input and map them to auditiv

I wouldn't find it too surprising if the brain would abstract actions and actors, perhaps even the tense from thoughts and sensory input and map them to auditive features and motor programs for (sub)vocalization and the internal monologue. I think, visual thinking is different from that. Mental rotation and visualizing objects have no actors and actions in it. It is just recall of movement, shape and texture patterns that have been previously encountered. However, I think visual thinking is often enhanced by thinking in language. The auditive memory can be leveraged as an additional buffer and as a means of verifying and constructing visual thoughts.