Well, organized religions were all created by humans. Mostly if not all by men. And many religions differ on what and what is not moral, so they clearly go beyond basic tenets of behavior. Putting aside the hot issues of the day like LGBTQ+, many religions still treat women as second class citizens. Codifying and punishing basic tenets of behavior are handled by criminal and civil laws. Basic tenets of behavior are at a different level than morals. I see ethics as main tenets that are fixed throughout history whereas morals change. I'm not doing a good job at answering your question. I read an interesting channeling recently on the 10 commandments, which could be considered the most basic tenets, and how even those changed from what God delivered to Moses and what he delivered to the people. https://medium.com/@jodieshelm/do-the-ten-commandments-need-an-update-92abdc418e35

I've seen many articles that discuss whether we need to have a god to have morality. That's similar but different to your question. Let me start with my personal definition of spiritual behavior from my https://medium.com/illumination/spirituality-redefined-ff45cb53eaf2 .

"When I use the term spiritual, I use it in a manner that transcends the binary of theism versus atheism. One can act entirely spiritual with or without a belief in “god” however one understands that term. Spirituality only requires love, empathy, compassion, humility, honesty and courage.

As I define spirituality, there is a flip side to the coin and all those positive feelings— accountability, both personally and holding others accountable for their words and deeds."

So right there, we have basic tenets of behavior not only without organized religion but even without God.

As I allued to above, societal behavior is not organized around religion. If anything, organized religion fragments societies and the world.

I don't know that I've answered the questions but at least I've addressed them.