PvE: Painter/AT/Gunner/Sorc/Cleric/SM/Assa (+ bard if you have a magic dps focused setup) are S tier.
Glad/Temp/Ranger/Chanter (+ bard if you have a phys dps focused setup) are trash tier since it's not optimal and can be replaced by better dps outputs.
Templar Trash tier in pve? Lol, okay
AT can do pretty much as much as templar + do more damage.
Can't really thing of reason for picking templar over AT
Dunno who doubts AT > Templar dpswise. Templars are liked in endgame PvE for good reasons, but they're not as strong in terms of dps. Furthermore Sorcerer is mightier in PvE than some of the other mentioned classes - and Ranger is certainly stronger than Chanter, Templar or Bard. It's just seldomly played and the average Ranger still seems to have issues with using its buff regularly.
Still, pushing a class dps-wise, optimizing a setup or an individual class' limits are all different matters.