I have been out of the Furnishing Retail game for a few years now, but as you classify 'Bucksuede Fabric Upholstery' it must be made by someone. Can you trace the retailer? then the Manufacturer?
As you probably know , (and Im not teaching someone to suck eggs as the saying goes) but only for the benefit of someone who maybe reading this.
SUEDE..... is the flesh side of the hide/skin, that is the inside of the skin which is sanded to produce a soft feel.
NUBUCK......is the outer part of the hide/skin which is sanded to a slight nap, gives a velvet type feel.
'Bucksuede' gives the impression that it originates from deer/elk type ruminant, but, who knows?
Alcantara, when it arrived on the furnishing scene, in the UK in the late 80's hit the high end market in a big way. Airlines, BMW were using it and we were selling some top end sofas made with it. Best produced man made since Bayer Dralon, great cleaning and wear factors.
Let us know your investigations.