E-2D standard configuration:

The radome is animated at 6 RPM and rotation is triggered at 400ft.
Alternative E-2D (and E-2C) with animated wing fold:

Belly mounted Cooperative Engagement Capability (CEC) platform on the D model only:

E-2C standard configuration (USN, Japan and France):

E-2D with inflight refuelling probe and top fuselage blister:

I'll also make an E-2C with 4 bladed props and hopefully we can also produce a "wet" FDE for static carrier operation. I haven't thought much yet about paints, but that's likely to be the US Navy squadrons plus France and Japan.
I think the Greyhound should be pretty straight forward, but I won't be doing that until the E-2's are done.
My new Windows 10 PC arrives tomorrow, so I'll take a few days to get that up and running and I'll then move on to designing the texture sheet and mapping the surfaces of the E-2's.
Please post if there's something else needed E-2-wise, apart from what I've outlined. Better to know that before the mapping.
John