My go to squad from years ago has always been 6 dragon kin. I get a dwarf or two with crit chance 20% for smithing, unlock battle smith, buy blacksmith and foreman, craft mithril heavy armour, heavy sword on my character, heavy crossbow on my starter slave, revert her from subordinate to slave, then back to subordinate (Since I can't get knight until I do that since knight is noble only and not accessible to slaves, so even though it shows subordinate, she's technically classified as a slave, thus the need to dungeon delve for the dominant shrine and break her will to use a writ) Then have three heavy crossbows in the back for arrow hail, with full legendary plate, three frontliners with heavy swords of legendary and just farm til they're where I feel comfortable, non-stop using cleave. I barely lose 3-5 hp against most enemies, including lich minibosses with bonus buffs. (Upwards of 1200 hp) And all my battle squad have over 300 hp in this setup. Also, humans became relevant now, since they can copy one unique racial class. I advise copying the dragon knight class. But you do you. I basically glide through any dungeon atm. I'm waiting til I have full gear before progressing with the story. And maximising my slave trader level. For maximum factor upgrades.
Sounds beefy! I have to admit that the orc berserker/deathknight doesn't hold well at lategame. Its bonuses can't really overcome its inability to equip shields, and with body mod for strong arms the ability to swing a two-hander plus have extra evasion and counterattacks is just too good. And I'm in a similar boat, unless I'm going up against bonkers boss battles my frontliners are only taking chip damage, so the other body mod options just don't hold up.
Also I've totally slept on the upgrades system until now, wish I'd been cranking out legendary quality iron gear back in early game.