I had an experience that was fairly decent with these NMs,
T1 in Marjami was very easy, have someone casting Banish and t1 elementals and DDs can do damage while it reflects magic and WS seem to always pass the -90% PTD
T5 in Marjami was a little tougher, had 4 SMN using Shiva and BLM using Blizzard based spells only, its high damage TP Move seemed to fall in damage the more ice damage that was dealt to it, PLD died and it went after SMNs but other than that a strategy can probably be easily worked around this one.
T1 Yorcia changes weakness from Physical and Magical Damage, not sure if it had a Ranged faze because i couldn't see RNGs damage.
T4 in Yorcia is very easy with a PLD tank and Many holy waters, It can be stunned with Elemental Seal + Stun; however doing that i took full hate off PLD and the stun wore right as it was landed.
T1 in Kamihr should have a GEO to keep its Eva and DEF down, It levels every time it snorts, Dispel is useful for dispelling haste.
Easy fight if able to be zerged quickly, once it hits ~Level 125 it starts becoming very tough for DDs to damage.
T4 in Kamihr also seems to have changes in types of damage dealt, it seems to have 3 stages between Physical Magical and Ranged, possible behind attacks deal more damage unsure at this moment.
Hope these help people figure out sort of how decent strategies that work for these NMs!