I’d say. From hardest to easiest I’d run with

Ninja,

Summoner,

Monk,

Machinist,

Dragoon

Black mage

Samarui

Bard,

Red mage,

Dancer

I do feel though monk is a large drop in difficultly down from ninja and summoner and beneath monk their all easy to play tbh.

SE have done a great job at getting the entry level to their jobs pretty low on the majority But the opinions on the order itself will vary. Mainly because outside the top 3 the rest of them are pretty easy to play, it’s rly going to come down to what people struggle most with from this point onwards

I’d recommend ignoring difficulty and looking at what you enjoy the most