I've got three cycads in the ground w/o labels... But I have pictures of 3 Zamia w/names.  Just can't connect the photos w/the plants in the grounds.  I think they go like this:

Zamia polymorpha

ZamiaAmblyphyllidia

ZamiaSplendens

 

 

I'm not sure about the others, but I'd say the first looks like Encephalartos Gratus.

I took a closer look at the first one, I think it's definitely one of the "big green" Encephalartos.  Gratus is a good bet, with the cupped, large tapered leaves and 6-10 large thorns on the leaves. 

The second one could be Zamia Erosa (previously known as Amblyphyllidia but merged to Erosa in 2010).  It's closely related to the common Florida Coontie, which has had at least 3 names over the past few years.  I'm still not sure what the correct name is, but it's been called Z. Integrifolia, Floridana and Pumila.  I really don't know the distinguishing features between Erosa and Integrifolia.  The overall size and sprawling nature makes me think it is Erosa/Amblyphyllidia.

The third one could be Z. Splendens or maybe Polymorpha or Prasina.  There's quite a few of the "medium sized leaf" types that I really have a hard time distinguishing one from the other.  In a couple more flushed it should be easier to ID.