I used to think that I was watched and listened to, through cameras/mics. (or sometimes there was just a feeling of beeing watched without a clear idea of exactly how I was watched/listened to)
I used to hear people commenting my actions and my thoughts, things I had done before etc (often it could be conversations between multiple people, talking about me.) The voices I heard always felt like they came from the outside, and didn’t feel like they were in my head. For example I could believe someone in an other apartment close by was talking about me.
In another psychosis I thought I was god (although not 100% convinced) and that I could communicate with others through thought.
To sum it up, most of my psychotic moments have been conversations between people talking about me (often very detailed, and very convincing, felt very real), and a feeling of being watched, people commentating my actions and talking negatively about me(although sometimes positively)