This might be my biggest cope by far, but...
I went through a few hundred tileset textures trying to find the one they used for the road, but I couldn't find an exact match. However, I came across one texture that comes pretty damn close. And as I started comparing the road in the jungle screenbs to most of the road textures used in WoW, I also realized that the shapes of the stone tiles seem a bit off.
Could they have used something like Photoshop's Generative Fill to "continue" the texture of this tileset to create something that has the same look but doesn't repeat the exact pattern?