Vinegar?!? arrrgh! :eek:
All alum parts will be eaten away from the acid and I bet it will speed up the rusting in high carbon blades - as shown in the Hill head in your last picture - and many others.
IMO you would be better off with steel wool and a drop of light oil maybe. But of course, the steel wool will scratch paint, ferrules and blades on certain heads. Take it easy and take your time and cleaning bhds can be fun.
I mostly use a rag and elbow grease. If needed I take bamboo "picks" (?word; not toothpicks, but kind of only longer, for BBQ) to scratch harder dirt particles off. They can be cut to shape and are pretty hard but not TOO hard.
Your "little" collection might be dirty and scorched but, I see something I dont have :( and you obviously got three of them. If you dont know what to do with your Timberwolves - send one to me
Via my profil you should be able to find my website. My kind of display racks cant be missed over there.