Omni (for groups of people), cardioid (rejects some side noise), or hypercardioid (rejects more side noise).
A shotgun mic is more difficult to use indoors. Because it reaches out a shotgun will often pickup unintended echo while indoors if you turn up the volume. This makes the audio sound cheap.
A hidden gem for indoors is the AKG8000. It has great noise rejection and it's a dynamic hypercardioid mic, but as a loss leader two are sold for $50! Its much better than those chinese shotgun knock offs.