I was more just musing over how it seems others haven't noticed the great synergy, despite the archtype being popular.
Suppose I'll post it for those curious.
Koa'ki Meiru Urnight x3
Koa'ki Meiru Crusader x3
Guldfaxe of the Nordic Beasts x3
Koa'ki Meiru Maximus x1
The Big Cattle Drive x3
Iron Core of Koa'ki Meiru x2
Diamond Core of Koa'ki Meiru x2
You still seem deeply confused and mistaken. XYZ Dragon Cannon is a crappy old, highly specific monster from a defunct archetype no one was talking about or referencing in any way.
In real Yu-Gi-Oh!, XYZ (Or Exceed) Monsters are an entire extra new deck classification like Synchro Monsters, but with a rank instead of a level. Summoned by overlaying two monsters of the same level.