Grid Monitor

• WWizards of the Coast2004-12-01
  Official Ruling
  You can still put creature cards onto the battlefield or create creature tokens.
• WWizards of the Coast2008-04-01
  Official Ruling
  A “creature spell” is any spell with the type Creature, even if it has other types such as Artifact or Enchantment. Older cards of type Summon are also Creature spells.

Rulings via Scryfall