I’m on my first honour play though, just hit level 11, and my party is the same as yours, but swapping the person who is stupid and mean for the second person you mentioned.
It might be a matter of changing battlefield positioning, or focusing on “action economy” if you’re not already. Unless you are doing an AoE, someone with concentration needs to be interrupted, or there is an odd mechanic, it’s best to kill enemies one by one. That means one less person is attacking you each round, and this advantage grows each person you kill off.