A few years ago I was in my living room in broad daylight and saw a person sized 'hump' standing in the middle of the room. It was made of black shadowy stuff.
I wasn't scared and my initial thought was 'oh it's you!'.
I felt a sense of recognition despite it having no proper shape or features.
It was surprising because at the time I hadn't heard of shadow people.
The only other ghost I've ever seen was the classic milky white see through person.