I have two teams.

The first team are all the same level and are leveling under their own steam. They're doing quests and doing instances. My main has mining and herbalism (which in reality means he only mines nodes he falls over) and one other has skinning which is macroed so I can do it without switching toons. Some of the others have crafting professions.

Frankly, professions with this group are a pain in the arse. I'm always having to trade stuff between them and when I do settle down to burn through the mats I've collected and skill them up, it can burn an entire evening.

My other team is being boosted. I levelled them to 8 and then took them to RFC. None of them have professions. I'm only looting blues.

Of the two approaches, I'm preferring the second one.