IMO the answer might not be as simple as some think. For example the OP asked about knives produced by companies specializing in traditional patterns.
Many traditional patterns usually have a greater amount of hand finishing as compared to some other types of knives. Combine that with unique natural handle materials or hand jigging and some might say that these types of knives are semi custom or at least hand made.
If you consider that a custom maker is capable of producing low quantities of identical knives , are these in fact custom or hand made? Of course if I call a maker and ask for unique features , this would be custom. But recently I inquired about a knife from a custom maker who told me that he produces batches of identical knives and offers them for sale, are these custom or handmade?
Don't misunderstand my post, this subject confuses me as well...