Aragorn isn't too great in an army, he is much more useful in scenarios and whatnot. Your good list has way too few models. If you plan on doing tournament play then i would choose madril over faramir, get about 60 or so men, then ally in whatever hero you can to be your "brawler" you have the right idea about allying in RoTn for cheap might tho
I personally wouldn't bother with the knights if you only want to use 6, but i understnad alot of people are fond of using small amounts of knights.As for evil list: The barrow wight is not needed, i commend you for choosing dark marshall over shadowlord tho
Your numbers are still too few, drop the barrow wight, upgrade the captain into a dragon knight, upgrade the banner into a war priest/drop the banner for numbers. I personally would take the following:
Khamul on horse
Easterling war priest
60 easterlings (10 bow and spear, 10 bow, 20 shield, 20 spear and shield)
The logic behind this is to have the easterlings take whatever the enemy throws at them, there are so many of them and they have high defence+fury so casualties should be limited, if you come across any annoying defence 9 dwarf heroes, you can have the priest boost khamuls strength (and then have khamul boost it himself too)
Another potential evil list:
Khamul
2 harad taskamsters
maximum amount of easterling warriors
This list is pretty straightforward, you just "out-might" the enemy with the taskmasters. Khamul can boost his rolls alot, and constantly fight with strength 6 because the chances are, he will always kill two enemies in combat thanks to all of his free might.
