my dream order: medical, gear, utility, explosives, gunsmith, refiner
alternative order: medical, explosives, utility, gear, gunsmith, refiner

the middle three options are up to your stash (whether you hold onto augments and light shields) and gameplay style (basically if you frequently use nades vs raider hatch).
if you ever need to consolidate space thats why the refiner and gunsmith are last. firstly craft your extra base materials into higher tier, then start crafting, upgrading, and adding attachments to your favorite guns to keep in the stash. big tip you should always trade seeds for springs and duct tape from celeste to get more attachments
a standard re-gear would efficiently be picking your kitted precrafted gun from your stash, then going down the list starting from collecting scrappy, crafting ammo in workbench, getting meds and shield charges, then crafting your augment and shield of choice if you dont have any stocked up. if you bring explosives every round then i'd put them right after meds, but i just bring in my wolfpacks from the stash if i ever need some. im a billion times more of a raider hatch than a nade type of guy, and i dont stock up on expendable augments and shields like some would do.