Great post on one of my favorite topics.
I only have to add one correction. Svarog (Heaven) only came after Rod who was the primordial God.
Slavic creation myth was similar to the big bang - In the beginning there was nothingness and in nothingness there was a nut or egg. Inside of it was Rod. When the egg cracked Rod came out. Rod than established principles in universe and shaped himself into those principles and universe itself. Thus Rod ceased to exist as a deity, but is still omnipresent for he is the universe.
I am glad you liked it. When I was doing a bit of research on this topic I found this legend of Rod as creator on http://www.starisloveni.com/Rod.html but I didn't include him in the blog because this was the first time I read anything about it. And I know Slavic beliefs differ greatly, depending on the nation so it is quite hard to create a timeline that would be true for all Slavic tribes. And Svarog is more similar to Amon- Ra of the Egyptians. He is connected with Sun and fire. But I agree with you. Interesting topic. I wrote mainly from my mind, what I heard or learned, because due to all diversity this is ,lets say, version of story from my parts.
I just wanted to mention him in case you didn't know about him. I discovered him pretty recently as well. I was pretty surprised how our ancestors had similar creation myth to the big bang theory.
There is wisdom in ancient stories