I am afraid you are not using a relevant definition to Natural Law as it applies to ethics (LINK)
In the context of ethics, Natural Law philosophy means judgments of right and wrong based on reason, because rationality is our nature. That's why it's called 'Natural' Law. Because it is law derived from human nature,. That is, a rational nature.
This would be as distinct from Supernatural law, which is, in itself, above our nature, and cannot be apprehended except by revelation.
Supernatural Law and Natural law, properly understood, will reach conclusions which do not contradict each other. They reach congruent conclusions by different routes.
It does not mean "doin' what comes naturally" or "that which is naturally obvious." It takes a whole lot of disciplined intellectual work to have a coherent grasp of Natural Law.
Natural Law relates to all those questions I asked you in #184. I don't think most of them have obvious answers from Scripture.
Do they?
They don't have smack-on-the-nose 'obvious' answers from 'nature', either, but you can reason them out. In fact, you have to, or you aren't acting justly.
If it's from the same outfit who can't properly appraise the signs of the weather ---- what good could all the rest of it be?
Your own apparent assumptions that the RC 'magesterium' is the only game in town (that could ever count?) is not shared by myself -- so -- I don't need any lectures from you, and will not accept them even if I did.
See ya'.
Have fun.