I'm looking to be able to collect the highest level materials available to me from harvest nodes.  I know that for Woodworking, Blacksmithing & Clothing I have to have the first skill maxed out, which is the one that says "Allows the use of ________" but what about Enchanting and Alchemy?
Do these work in the same way?  Is there a specific skill I need to level up in Enchanting and Alchemy in order to receive higher levels materials from harvest nodes?  If so, which ones are they?
Many thanks!