This thread is about the creation of gods by humans, not the creation of humans by gods.

I have an extreme opinion of the god creation process. I don't look back into history to discover the original source of Yahweh, Vishnu, or Allah. I see gods being created right now in the minds of believers.
Each believer has their own god, composed by their own mind, and in an ongoing process of revision and updating. Similar to the creation of memories. When we bring a memory out of "storage" it is not the same memory as the original. Every time we remember an event, face, smell, etc. we create a new memory. This is why witness testimony in court must be taken with a grain of salt.
The idea of gods are , of course, communicated by culture. If you live in India, you may have your own personal Krishna. Alabama, probably Jesus. Mecca, Allah. But, unlike the concept of a tree or waterfall, there is nothing in nature to validate the god concept. Gods only exist as human ideas.