Can Blitzcrank move enemy units from any location, including units on battlefields without ganking?

Ruling: Blitzcrank can move any enemy unit to his battlefield regardless of ganking restrictions. Movement restrictions (like ganking requirements) only apply to Standard Moves, not to moves caused by card effects.

Nuances:

• Standard Moves have specific restrictions: they exhaust units, can only move between base and battlefield unless ganking, and can move multiple units to the same location at once
• Effect-based moves (like Blitzcrank's ability or Charm) do not follow Standard Move restrictions
• Effect moves don't require a specific name in the rules, though "effect move" is suggested as useful terminology