Gandalf and Shadowfax (mounted by Black Raven, foot by Jacobite)
Beregond and Bergil (Jacobite and Minifigs)
More Guards (Jacobite)
Prince Imrahil of Dol-Amroth and the Swan Knights (Essex)
Men-at-arms of Dol Amroth (Essex)
Men of Morthond (Falcon)
Men at Arms of Gondor (Peter Pig)
Aragorn and entourage (Tabletop and Donnington). For some reason I have forgotten the name of Strider's standard bearer,but it is mentioned in the book)
Legolas, Gimli, Pippin and Merry (Chariot, Asgard, and Essex)
The Rangers of the North and fiefs of the South (Peter Pig and Essex)
The defending forces
...and arrayed for battle on the ramparts.
Riders of Rohan next (my favourites)...