I am one of the users doing Data Entry work for the SF system on Foundry VTT. I am currently working on expanding the racial features items in our system, but ran across the Barathu's Internal Chemistry feature. One aspect of this feature is that they can do a Ranged Natural Attack.
In the Foundry VTT system, we have feature items, and weapon items (Different submenus). I set up the Melee version of Natural Attacks as a weapon, setting them a Basic Melee, as they emulate a special Unarmed Attack.
However, with Barathu's ability, I don't know how I would categorize a ranged Natural Attack. Small arm? Long arm? this would be important for how other bonuses can stack with this attack.