I'm a stroke survivor so I'm a bit scatterbrained.
I enjoy RDM, reaper is also pretty easy... and also there's SMN, which I didn't pick up yet(despite having it at 90) but everyone says its the easiest thing we have.
I've been slowly leveling DRK- so far it has been the easiest experience for me, but I don't have it at 90 so I can't say for sure.

Dancer might not be so easy for everyone because you kinda need to pay attention to your procs and the steps, even if it isn't complicated at all.