More interesting facts about this:
The initial entry date on Lucy for all 3 basic armor sets (banded, ornate chain and fine plate) is the same 2002-12-22 which I is probably when Lucy launched so that doesn't help very much.
After looking at the
Expansion Specific Groupings on
this list of recipes it seems that Kunark didn't add any new trade skills recipes and while Velious did add new recipes, pretty much all of them used Velium.
I know you pointed out that this list was created in 2003 but it's very difficult to find EQ related websites that date prior to 2002.
This is so intriguing...