They're just a variation of Mack's tree set, which DarkGamer nicely posted for you. I see both trees that DarkGamer posted in those videos and 1 that is not. That tree is either hiding on his website, was edited by the person who made those videos or edited by someone else. If you asked the person if those were Mack trees and he said no, then I can't come up with a single good reason why you didn't ask him where he got those trees then, since obviously that's really what you were looking for anyway.