City spirits still exist and come in flavors that reflect changes, yes. The Spirit of Atlanta, for instance, has a bit of ash around the hem of her dress and always has a somewhat smokey scent. The smaller aspects of the greater city spirit that people can call up aren't much different than the aspects of Bear, Cat, and so on that are called up. The levels of spirit are talked about in FA (Look for the talk about "Imagine a chair..." and you'll be in the right area) and how you're just getting a slice of the greater pie, not the whole thing. This makes them manageable and understandable for communication. Were you to call on a higher level aspect, things get trickier.
And then there's Zebulon. Long, long story.