Thanks for your question and sorry for the delay, this was a big one. There aren't many ghosts left in Anchor because of the nature of the place, as energy transfer in and out is a constant. There are some, however, though less than there would be on Earth.

Ghosts would tend to be human or humanoid, though not all of them would be. Most common causes of death would be radiation poisoning/burns and various types of violence. Some ghosts may be 'fractured' sort of like a glitchy projection and not make much sense either visually or verbally.