1. The first kind" are sad ones or wispy ones, working out some unfinished business or suffering from some sort of purgatorial purification.
These ghosts seem to be the ones who just barely made it into purgatory, who feel little or no joy yet who need to learn many painful lessons about their past lives on earth.
2. second kind: some purgatorial ghosts who might have been so material minded in their earthly life that they can't detatch themselves from these material places or things(possessions) God may allow them to "remain" attatched as they work out their need TO LET GO.
3.third type might be those who don't yet realize their dead. God's compassion= letting the spirit linger for a short time so that they may realize their fate before leaving this world completely.
4. a fourth kind/type is the malicious and decptive spirits, most likely from hell.
5. a fith type is bright,happy spirits of dead friend and family who appear unbidden at God's will, not ours, with messages of hope and love ( from heaven).
6. This type might be a form of time/space instant replay.
7. Some "apparent" ghostly apprations or effects may be the bi-location of the living.( astral projections of living people. Scriptual evidence/ Rev.17:3,21:10 and 2 cor. 12-2 and verified by Padre Pio.
Padre Pio suffered for 50 years the five wounds of the crucifixion called stigmata. you can read more about him at www.padrepio.net I place his picture here because it is a true phenomenon.
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