Toyota has the FJ Cruiser, that is not a Jeep (because it's a... Toyota..

). Jeep has several classifications of models:
-Wrangler-
1987-1995: YJ
1997-2006: TJ although there were some longer versions of the model that were made, commonly referred to as LJ's.
2007-Present: JK
Of course there are a few classifications of Cherokees as well, mostly referred to a XJ, and the Grand Cherokee as ZJ. Then the other "Jeeps" have models as well, not sure about those.