I have a question please help

I think ghosts can be generated as townies, so we probably can't list/name them all. If you go to Manage Worlds and Manage Households, you should be able to find them that way.

I know there is one from Discover University which is in manage worlds as the PsyEd household (or something really similar). He is a adult or even elder gentleman and I think he wears glasses? He is tied to the Britechester law which you can research on the relevant machines. Hope that helps.

Mimsy and Bernard are at the Von Haunt Estate. They are in period dress. I'm not sure if certain pets are always the same.

I think there’s a ghost dog in the household bin

There is a ghost dog and a ghost cat that came with C&D. I forget the name of the dog but the name of the cat is Mayor Whiskers. You can find and manually delete the EA-created ghosts in Manage Households (other than the two at the Von Haunt mansion, but they don't go wandering so they're easy to avoid); MCCC should work on the random townie deaths. (I've seen a ghost or two wandering around UBrite other than PsyEd.)