German Shepherd deserves to be #1. Strong, loyal, and with an almost human brain . So are the other dogs you listed. Chow Chow? Wouldn’t trust one. Some of those hunting dogs, yeah. O.k.but not really in the same class.
Surprised the Neapolitan Mastiff.
I don’t know most of the dogs in the article I listed. The male Belgian Sheepdog and Tervuren were the best guard dogs I have had. The Tervuren actually bit an invading black bear right on the butt. The young German Shepherd is promising to be a great guard dog. We also have a collie who is very sweet, but not a guard dog. Also a female border collie/Saint Bernard mix that is an excellent guard dog, but getting old.