Which Crafting Material Sells The Best?

So I just went and leveled the 4 gathering skills to level 20, so I can do the quests that have them as requirements, and found that it was pretty relaxing to just grind away. So now I wanna know, which material could I make the most money off of, selling either in the market or just to the blacksmith?

I know this won't be the best way of making money, but it's more about trying to make some money while doing some relaxing stuff.

 

Idk about that but I heard that they aren’t really worth until endgame so u prob won’t get much if anything (and they r very Grundy)

 

You can sell crafted items for a lot if you get the profs to level 100.
It does take a lot of time though