Nice pixel art! And well, those examples you mentioned all had one action figure type, right? It's probably best to do the same here, especially since action figures of our characters don't really make any sense in universe, unlike those examples you mentioned.
I would say an Enforcer Captain action figure would make the most sense, if it's actively produced to make the Solis forces look cool even to young children. Alternatively, tech worker one is my favorite, and can be justified as a way to ensure this otherwise unglamorous branch of Solis forces wouldn't get understaffed in comparison to regular Enforcers.