If you are looking for End Game Melds for DoL/DoH then visit Teamcraft’s guides
Create crafting lists and collaborate with others, set gathering alarms, simulate crafting rotations, and more…
There are three gathering classes and eight crafting classes. I recommend allowing one gatherer and one crafter to reach the maximum level before others in order to farm end game currencies as soon as possible. Hopefully, you can find some useful information here that can prepare you for the end game.
Before touching any crafters and gatherers (DoH and DoL), you should progress through the main story beyond Heavensward 3.3 Revenge of the Horde, namely, the conclusion of “Litany of Peace”. This is a level 60 quest and concludes the Heavensward storyline. A list of patch quests can be found here. From this point, you may pick up your DoL and DoH jobs.
Grind your Gatherers and Crafters to 20. This is easily done by quick synthesis on any of the initial recipes. Ensure that you are using food for additional exp bonus and that you are also part of a Free Company since many FCs run a bonus experience buff for either gathering or crafting, sometimes both. Your next step is heading to the Firmament aka Ishgardian Restoration. The reason for getting all DoH and DoL jobs to 20, is because gatherers compliment crafters by finding their materials. Also, some recipes require different materials made from different crafters.
Leves are an option but keep in mind that these are gated by your allowances per week.
Focus on main story until Stormblood Expansion
Get all Gatherers and Crafters to 20
Unlock The Firmament
Live in the Firmament
Supplement your leveling with Beast Tribes and Custom Deliveries