Haunted Duke’s Daughter , it has 2 protagonists. A duke's daughter and the ghost haunting her. Though its more like the story of scrooge where a vileness is fixed up by a ghost lol Though by haunted object you mean a person being haunted? Or a physical object. And if the later, is it any different than reincarnated as an object?
Non-Human Seeking Re-employment The main character is a thousand year ghost who just possessed a human body and becomes trapped in a survival game It's BL though which may not be your thing
Yeah, you'll have to wait for CG to translate it, but at least there's a new chapter every few days give of take. I've also read some quick transmigration/world hopping novels where there's an arc where MC is a ghost but that's usually only about 20 chapters out of the hundreds that there are. Side Character Transmigrations: The Final Boss is no joke Arc 8 Ch 219-250 I know I've read more but I can't remember off the top of my head.
i’ve never really been i fan of world hopping though that’s probably because some people do it out of nowhere or suddenly one of the hopps is almost 100 chapters long while the others end at 20-30 it also usually makes them rush plots like infinite endurance on webnovel okish fanfic but at the end the pacing escalates to an insane level