Hi Shadow,
Welcome to PC! We're glad you're here.
Mine are loud thoughts, although I do refer to them as voices at times I think. My T explained it like this. If they come from outside my head (feels like they are outside talking to me), then it is probably caused by something else (psychosis, schizophrenia, etc), but the inside voices- loud thoughts are coming inside my head, they aren't telling me what to do per se (such as go kill this person, go steal that whatever, etc), then it is likely part or me.
I don't have anything talking from outside my head. But, some of the loud thoughts I hear feel like wow, I would never say that (but I find out later, from T or someone mentioning it, that indeed I do, as another part of me

). I also get them kind of chanting some pretty yucky names at me (I think it is a repeating of what the body was called when it was little). That is always a pretty negative experience for me.
Hope that helps a little? It's still confusing to me and sometimes I'm not present enough to catch all of what T says so I sometimes have some half truths running around in my brain.

Thankfully my T explains things as many times as needed without acting like I'm a dumbbutt.
We're glad you're all signed up and chatable now.

Hope to hear from you again soon!