Greats is a workboot brand from Wuhan, China. In its product description, he will clearly specify which iconic model from which prestigious brand he is copying.
Maybe you think he wants to make cheaper alternative, but he does not. He prefers to use premium leathers such as Horween cordovan to make those shoe even more attractive. I think this upscale copy is an interesting path.
Let us have a look what the shoes look like.
Remark
This brand is more like a custom shop, because you can order any shoes you like, even they are not in its catalog, and you can designate any leather you want. So it is more of a service than selling shoes.
Workboots are not in my eyes, and the dress shoes are not very exquisite but some design and lasts are not bad, I may pay a visit as Wuhan is my hometown.