I'm a little bit edited second option. What do you think now?
Option 2(new idea):
1) Guardians of the Ococarni(with mace and shield)
Orocarni units will have this design:
Mace:
2) Phalanx of the Ered Mithrin
3) Ered Mithrin crossbowmen
Maybe this design for Crossbow:
Ered Mithrin units will have this design of movie Iron Hills army:
So, Iron Hills units will have old edain design(dwarves army of book) and Ered Mithrin units will have movie design of Iron Hills army.
Guardians of the Ococarni have better armor than the Iron Hills units.
Ered Mithrin units have better attack against a monsters than the Iron Hills units.