They are missing Motorola iDEN phones (Nextel).
If you have an Nextel phone, go to
www.idenupdate.com, go into Wallpaper, and Miscellanous, you will see a large number of GLO wallpapers. For $1.49 each.
They don't have every one, but I think they have most of the NIC/NPC/NPHC GLOs.