An Aura's card type is Enchantment (with the subtype Aura), not Creature. The 'enchant creature' text is its enchant ability, which defines what it can legally attach to — it does not make the card a creature or give it the creature card type. Card types are fixed on the card itself and do not change based on subtypes or abilities (CR 205.1, 205.2).
When a card is in the graveyard, it has exactly the characteristics printed on it (plus any copy or continuous effects that apply). Since an Aura like Pacifism or Rancor has the type line 'Enchantment — Aura', it is an enchantment card in the graveyard, not a creature card (CR 109.2, 400.7).
Therefore, any effect that counts or cares about 'creature cards in a graveyard' — such as Grim Grinning Guests, Gravedigger, or Creakwood Liege — will NOT count or interact with an Aura enchantment, even one that says 'enchant creature'.
Example: You have Rancor (Enchantment — Aura, enchant creature) in your graveyard. Your opponent controls Scavenging Ooze, which can exile creature cards from graveyards. Rancor cannot be targeted by Scavenging Ooze's ability because Rancor is not a creature card — it is an enchantment card.
The 'enchant creature' text only matters when the Aura is being cast or is already on the battlefield attached to a permanent; it has no bearing on the card's type in any zone (CR 702.5a).
Unofficial fan resource — not affiliated with or endorsed by Wizards of the Coast. Answers are AI-generated estimates grounded in the Comprehensive Rules and are not a substitute for an official judge. Verify anything match-critical.