Your work on these figures and integrating others into the theme is top notch so far. I'll be trying to go back and make some minor modification to my male Samaritan troopers based on what I've seen here.
I had also been trying to think about how to differentiate the different models on the table, since they're almost all the same. I had sketched up some ideas of primarily white armour with different colours on the shoulders (red, blue, green etc). Yours look better than what I was thinking, so I'm going to 'borrow' your schemes for my own models!