Ghost doesn't seem too hard. Just stay out of those firing arcs and shoot it down. Eventually they will have to pop the phantom (when it is down to 4 hull or less) be ready for that. The ghost essentially takes 3 ships out of the squadron (large ship counts as two) although it can make an additional turret attack (half for TLT) it still isn't as much as say 4 Y-wings.

Ghost should really be posing no more of a problem than the VT-49 Decimator.

fat ghost isn't all that great and can be reliably outplayed

the auto-correct (or FCS auto-blaster) or "fat defender" (hera FCS +/- Ezra crew) variants are very effective for relatively cheap, and they scare aces. They have a small bit of a learning curve since you gotta get used to staying out of range 1 (ie long approaches) and get used to the idea of infinite 5ks without a single **** given about stress, respectively

1 plasma torpedo & 2 advanced proton torpedos (from focused ships) .... in a good day will leave it with 1 hull left... in a bad day 8 hull :\

or just shoot it with primary weapons

it goes down really quickly, and without a PWT it can't always return fire

There are a lot of munitions builds waiting to be discovered I think and U-boats, ghost and even palp aces will bring them out of the woodwork. I experimented a bit with KBY plasma spam and except for kanan/biggs or zuckuss it did alright. Retuning it without the K for blockers. Otherwise melted JP5000's Firesprays and ghosts.

When playing Epic ships, I just normally throw plenty of basic weapons at them and they burn down quickly. Ghost is similar but with no Reinforce action but a few other tricks up its sleeve.