If I remember correctly, the Hoard of the Dragon Queen modules were written by Kobold Press, not WOTC, which does make it very complicated to understand exactly what 5e's theology system is, considering this was one of the first official modules ever released.
Oh, it's pretty clear what it is: A hot mess.
It's Eberron, not ebberon.
It's not high magic, it's wide magic.
And it's definitely not steampunk. The only time steam gets involved is when the fire and water elementals break loose.