I think you didn't quite understand my post. I would not say that nothing exists without mind, for sure, plenty of things existed long before minds evolved to experience them. I was just making the point that our experience of things 'out there' is a fabrication of mind. That is what minds do, they take raw information about the world and construct a rich interpretive fabric of experience from it.
None of this impacts on whether all things were created by a creator, a different matter altogether. To me this seems like a non-starter of a proposition, firstly because there is no evidence to support it, and secondly, because the implication of this logic is an infinite regress of creators required to create creators.
Historically, this is fascinating stuff. For one thing, it led to those currents of idealism, exemplified by Bishop Berkeley, who argue that there is only mind, or as some say, Mind. In BB's case, this also aligned with theism, since this great Mind is a bit like God. However, I struggle to see how this is a Christian view, since surely Christians accept that there is matter without mind? Well, OK, God creates matter, I guess.
It can also be seen in Eastern religions. There are Buddhists who argue that there is no world, and most radical of all, that there is no I nor world, although here they often mean 'separate I' and 'separate world'. But of course, not theistic.
I suppose the way out of the idealist trap is in part historical - since the universe existed before we experienced it - and also, inference, it's reasonable to suppose that when I'm out, the house still exists. This is supposed to be the basis of peek-a-boo games with kids - thrown the toy out of the pram, where is it? Ah, it's there again. I play that one with my wife, with a bottle of whisky, where is it? Did I imagine it?