Originally Posted by
schm0
I wouldn't categorize them by range, since the range is entirely irrelevant. That being said, Spirit Guardians is another spell with a range of self that does not bestow an effect on the caster, but it instead creates spirits that flit around the caster (i.e. a magical effect, which in turn can be targeted by dispel magic.)
The ruling I proposed is based entirely on the nature of the spell effect per dispel magic's description. The mechanics are simple. What effect does the spell create, and does it reside on a creature, an object or in the form of a magical effect? The answer to that question is the answer to "What can dispel magic target?"