So, I will do a light effort post for moths.
Amicable trait has been proven itself to be really good so far, and having our first non-servant creation be amicable would be a boon if we want to avoid in-fighting between our creations due to amicability promoting them being diplomats. Even more, they are attuned to Hysh, which is the Wind of Enlightenment, making them really hard to subvert by Chaos. Additionally, they are long lived, ehich will help them retain information they learned from us.
As such, I think they are a good choice for the first inheritors.