Now here's a less obscure one. I was surprised that no one made a lora of the best girl from Heavy Object yet. I guess anime only had her in one arc, but Myonri is probably the third most important female character in that story, often being deployed alongside the protagonists. While also being way more useful than the two main girls and not having their arrogance. Well, third most important in the main story, Mariydi is in her own separate plot.

Myonri: Myonri, black hair, brown eyes, ahoge, short hair, blunt bangs, medium breasts

Extra: military uniform, gloves, knee boots, rifle, hood, fur trim