Do you know any specific part that might need to be fixed?

Because they're defined off the Soldier/Heavy Soldier base type. Just keep scrolling through Soldier.ini and you'll find the definition for Mercenary, Point Man, etc.

Kettenkrad did the reasonably-smart-thing and defined a basetype, then did copyofs with redefinitions of the core parts (different head, etc.). Makes balancing and tweaking much easier than updating 6+ individual actor entries.

Keep in mind that GI actors come pre-equipped with two+ weapons. They're redefined in Shoplist.ini which is where the weapons are added.

What is there to be confused about, exactly? Just set it up like a normal Loadouts file using the usual actor names and only give them 'extra' items since they start with guns by default.

In a word; no. Not to sound like an ass but I have my hands full as-is. I just don't have the time free to work on it.

I will explain this simply;

1. All of the actors are already cleanly defined just like any other actor. All you need to do is use the right name, which can be found in the Shoplist.ini file.
2. When making the loadout, equip actors with only tools such as diggers, because they come with weapons already.
3. Save the loadout and test it out to make sure it works ingame.

You have done all of the steps of this process before since you made one for the Order? there is absolutely nothing new to it beyond some minor observances for how the base faction works. Slow down, take time to read and make sense of what I'm saying. If you don't understand then I or someone else can try to explain it more simply.

That should be correct, yes.