1 Light and Firefighter are in their own league as far as 10 mans go. 1 Light has more RNG involved than Firefighter but both take a coordinated group with solid dps.
General hard and Freya are both fairly easy. General has a very simple strat while Freyas strat is more complicated, but with less chance of the tank dying. Don't blow up detonating lashers during Ground Tremor and you're set. A Disc Priest makes it even easier just spamming shields on the entire raid.