Just to give you more options, there are also beast tribes and new delivery NPCs as you get higher. I never did the Ixal so I can’t comment, but you will have Moogles in HW, Namazu in SB and 2 different ones in ShB to help break up the grind (1 for DoH and 1 for DoL).

Of course there are also additional delivery people here and there!

For me, deliveries were always the best, even after their story was done to get scrips/unlock recipes etc.