Hello, guys, please, does anyone knows who is actually author of the loading images? The one I really need to know about is THIS: 
I have it as painting on the wall in living room and I’d like to get the “approval” and signature on that… it is masterpiece
I think this is not a painting. It’s more an artwork created with photoshop from a real photography.
Look in the credits for 2D artists or additional graphics.
Not really from a photography. Though you are partially right, it is painted in Photoshop.
I think it is by Mikuláš “Miki” Podprocký, lead of concept artist in the Warhorse Studios.
Here is some short QnA with him (together with some examples):
