TIE fighter: It's called
Eyeball
because of the cockpit.
TIE bomber:
Dupe
because it has two pods.
TIE interceptor:
Trip
's short for Triple because of the three wings.
TIE advanced/avenger:
Bright.
Probably because they're high tech and stand out.
TIE interceptor:
Squint
. Pick up a TIE and hold it head on with the cockpit facing you and the wings in that H shape. That's an Eyeball. Now hold an interceptor in the same way.
As for the rebels, Y-wing's been called wishbone before. And then there's the DIE-wing fighter...
We can actually represent the DIE-wing with the stats we have now.
2
1
3
0
with a Y-wing manuver dial and no upgrade slots.
The Zann Consortium is balanced about as well as the Falcon would be if you put the peg under the cockpit. They tried to make them unique and did so by stripping out all the weaknesses of the other factions until they had a force that was more powerful than the Galactic Empire. I could go into great detail as to how but I'd be straying even further from the topic. Pretty much every FoC mod guts them in some way.
That being said, FoC's certainly got some ship material. It resurrected the Phantom which probably is how it got into X-wing, and I reckon we'll see the Starviper (Virago) at some point, and the Skipray Blastboat would be an excellent turreted Imperial ship. It's a nice looking one too.
When you think about it, every single ship in X-wing so far is in FoC except the E-wing.