Rightly or wrongly, with input from some more experienced hands and from a Lockheed 2017 FAI "guidebook" I decided I would list on Form 2 items like conformal coating, epoxy, RTV sealant, solder, etc. as well as items like metal bar stock, and of course special processes.
I figure worst case the customer comes back and says something on Form 2 should go on Form 1 instead and so we fix it for them. I don't think most customers who ask for AS 9102 FAIs ever look at them beyond "yep, they supplied one, now file it away".
From what I have seen there is a tremendous amount of confusion about how to properly complete AS 9102 FAIs -- so much so that many companies publish their own guidance documents and/or training presentations to supplement the standard and help their internal and external folks to do them "properly" -- at least in their opinion. It would seem to me that some more complete examples from SAE would be very helpful, but being helpful and clear doesn't seem to be foremost in standard writers' minds, IMO.