[Crazy Jetty]

I would heavily suggest the TPB, Blackest Night: Tales of the Corps, Nako.
It's a collection of backstories for members of the various corps.
For Green Lantern, a story dedicated to Kilowog, and another story to Arisa.
Bleez of the Red Lanterns
Blume of the Orange
Mongul of the Sinestro Corps
Saint Walker of the Blue
A tale of the Indogo Tribe
Carol Ferris of the Star Sapphire
Nekron, Black Hand, and Superboy Prime round out the rest.

It's a pretty good variety of stories about lanterns other than Jordan, Rayner, Stewart, and Gardner.