Except for the listed exceptions, the token copies exactly what was printed on the original card and nothing else. It doesn't copy any information about the object the card was before it was put into your graveyard.

The token is a Zombie creature in addition to its other types and is black instead of its other colors. Its base power and toughness are 3/3. These are copiable values of the tokens that other effects may copy.

If the copied card has {X} in its mana cost, X is 0.

If a card copied by the token had any "when [this permanent] enters the battlefield" abilities, the token also has those abilities and will trigger them when it's created. Similarly, any "as [this permanent] enters the battlefield" or "[this permanent] enters the battlefield with" abilities that the token has copied will also work.