I simply don't have enough knowledge about forging work, different pamor material and staining to say something at all. 
 
About #1 I also thought, it could be metheoritic, becouse of very thin, sometimes almost transparent layers. I have also heard about colour variations, but isn't this colour coming from rust and/or staining? 
 
I thought, #5 could be nickel. 
 
#4 looks like a combination of mlumah and miring. 
 
As #3 is pamor poleng, it couldn't be older then 30 years (?). Is the surface treatened in this way, because it could be an old looking dhapur?
		 
		
		
		
		
		
		
		
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