Demons

So far as I can tell, the supernatural beings that the Bible speaks about are GOD, angels, Satan and demons. I can't exactly remember what it says about angels, except that they're fearful beings and they praise God and help people.

So it seems to me that the supernatural beings recognised by people (jinn, ghosts, ancestors etc) are probably demons. Realising this may be happy news for some who feel trapped and oppressed by these beings, but it may be shocking and horrifying news for others.