Haven't beaten a group with a SCH yet when we have a WHM, SCH has fairy (can be placed to allow heals on team whilst kiting) and Lustrate (6 immediate heals - 3 > AF > 3) which is an instant. Miasma + Bane can be a lethal combo (heavy and reduced healing - very important). Targeting the fairy ends in a swiftcast resummon. Healer Knockback PvP move + Miasma also frustratingly effective. Adloq crit is very annoying (yet satisfying when you land it). Not saying that WHM isn't good, just that from a DPS/TANK POV SCH are very frustrating to kill.
A moving target is the bane of MNKs, I've noticed DRG jumps and their ranged attack to be viable, however MNK has almost no ranged abilities (apart from shoulder tackle, which by the time you can perform an action after the animation of the attack, the stun has finished - and also tends to miss on a sprinting target)
Archer very effective, the ranged hits can still interrupt spells on a healer. Also silence is a given. Kiting is also viable.
PLD is very effective with shield bash, can either harass healer and use when possible, or enter a group and cycle targets. Also cover is good to use if a healer needs a moment of respite. (Saw a hallowed ground > cover whilst the WHM swiftcast > raise whilst running away, our now secretly raised BLM then slept the group on the healer, I was raised and we then proceeded to win).
WAR with holmgang then immediate stun after holmgang expires is great on healers at the start, can get lucky and really burst them down. Also has semi decent damage delivery (people underestimate a tank for damage purposes)
BLM has sleepgagagaga (feels that much effective)
WHM was stated above in the quote.
These are just through personal experience by the way. (I play WAR/MNK/BLM)
