Generally I build (laser-armed) multi-role fighters that work well in a dogfight, and then if i have enough left, easily swarm over cruisers and frigates which aren’t specific AA.
I’ve experimented with bombers too with mixed success. Most scenarios I dont bother, as my MR fighters either win it, or get taken out by AA fire (in which case most bombers would too).
That said, I’ve experimented with a federation rocket-armed fighter, which is faster than my interceptors. I guess it qualifies as a fighter, but i set it with frigates and cruisers as priority. (Longer range on frigates, V. close on cruisers). They aren’t effective vs. fighters, because the rockets would miss. Its speed (about 2.5) means it can endure slightly more AA than my fighters, and it gives me better anti-frigate ability).
Heavier bombers than that, armed with torpedoes etc tend to be too slow. They reach a point where armour is just a waste - they’re going to get hit repeatedly. In a decent group, they can take out a couple of frigates or a cruiser. Usually this costs an amount which I’d rather spend on something else. They need fighter superiority to survive, and if i have fighter superiority, I can swarm them (with a few exceptions).
NB: I’ve formed this opinion using Tribe (except the rocket armed stuff, ive only done that for federation and might work better with tribe). The extra hull strength might make a difference. Im also experimenting with swarm now, to see if the speed bonus changes things.