AR-Trvlr
First, thank you for starting the resource so long ago and even more, for keeping up with it and updating it as well as you have. It is a monumental task to archive all this information and you have done so in a manner that is easily searchable so that even dumbasses like
Casinostocks
can find what they are looking for.
I hesitate to suggest how you should do things, and what does or doesn't get included. For one, you have been doing great, two, what makes my idea any better than yours? However, you have asked, so I will throw out my thought on it with no judgement on whether you listen or not.
I think the individual patterns should have a heading of there own, just like they currently do. These should be for the production patterns as would be or have been available in a normal sale or pre-order. How you have been doing it is perfect in my opinion.
Everything else, should go in a heading of its own as it was not a production piece or was not for sale via the normal channels. It could be titled, one offs, customs, unique or all three. It would be a catch all for those Fun Friday and other sales of knives that are or were not production pieces. For instance, the DEK-0 was never a model, it is just what Nate and Mark came up with as a name for a one off Fun Friday piece. A perspective buyer cant order one and there is no plan to produce any like it. Timmy's "table knife" is the same. It was never a production model, you can't order one unless Nathan decides to start making them, it is a one off piece, in this case, not even for sale to anyone but Timmy. The current semi-tanto pictured in BLADE, was never a model that was for order, it was a Fun Friday piece. There have been one off EDCs, FK2s UF variants and so on that are unique and one of a kind.
TLDR: I think unique and one off pieces should be grouped together under one header as they were never production pieces and may not have ever been for sale to the general public and as such, are somewhat unobtainable.