What is this thing? Looks like 2 Mohawks, 2 Phantoms (or F-4 variants) and...?

The two small delta-winged aircraft are A-4 Skyhawks, not F-4 Phantoms. The weird thing in the middle is a "Stealth F/A-18 Test Article".

I believe the R row is T-39 (Saberliners) and the L lower are A-3. Above the A-3s are what I'm calling F-89 Scorpions (in a drone configuration).

Top and bottom center are, I think, de Havilland DHC-5 Buffalo, which were C-8s in the military.