The most current fully realized quest list for efficient TRing was posted
last month by Grynberg. It takes into account current quests and the way quest ransack currently works, but looks like it might have been conceived right before Reaper became a thing.
Another older guide was posted
back in 2014 by kuro_zero. That guide was created after the quest ransack changes, so it's largely current. I only include it in case there's aspects of Grynberg's you don't like, you can look at kuro_zero's for comparison.