It used to be jobs were 70-80% unique, with 20-30% overlap in things like
-Gap Closer (Spineshatter Dive, Shoulder Tackle)
-Self mititgation (Second Wind, Perfect Dodge, Keen Flurry)
-Single GCD DoT (Phlebotemize, Touch of Death, Mutilate)

But now jobs are 70-80% homogenous, with 20-30% being their flavor (Jumps, Chakra, Mudras, Cards, Fairy).

But like even tanks for example:
-Edge of Shadow/Flood of Shadow=Burst Strike/Fated Circle=Holy Spirit/Holy Circle=Fell Cleave/Decimate
-Delirium=Requiescat=Bloodfest=Inner Release