The Jury, a marshal henchman that makes it easier to get mask triggers and ramps up the fees condition
Investigator, a guardsmen minion the a lot of marker manipulation
Queller, witchhunter minion that removes suits from enemies and can gives other models a condition that makes their damage dealt unable to be reduced.
Monster hunter, a family minion with stalk that excels at taking down higher SS enemies
Domador de Cadaveres, a marshal that lets you hire an undead model with some synergies with undead models, and has attack that damages enemies and heal friendlies.
Riot breaker, construct that prevents extra AP, and in general limits what enemy models can do.