Elemental Battler of Eastern Kingdoms

[npc=62621] 2/2/1
[npc=127947] 2/x/2
[npc=26119] 2/2/2

This worked for all the battles.

Credit to Majduska for the idea, I just worked out the script.
Gen Elemental::2219G7:222B216:12255F:

Fel Flame
Prio 1 Scortched Earth
Prio 2 Conflagrate
Prio 3 Flame Breath/Burn

Blazehound
Prio 1 Magma Trap
Prio 2 Frenzy
Prio 3 Obsidian Bite

Phoenix Hatchiling
Prio 1 Immolate
Prio 2 Conflagrate
Prio 3 Burn/Peck

Average for all battles is 13 rounds. 1 min 45 sec
Will rarely need the hatchling. Choice for all 1st ability is optional, though Obsidian Bite beats Blazing Yip... by the time it cycles through, enemy health is low enough that stunning them just wastes a round

-----BEGIN PET BATTLE SCRIPT-----
standby [ enemy.aura(Undead:242).exists ]
use(Immolate:178) [ !enemy.aura(Immolate:177).exists ]
use(Scorched Earth:172)
use(Conflagrate:179)
use(Magma Trap:811) [ !enemy.aura(Magma Trap:810).exists ]
use(Frenzy:1965) [ !self.aura(Frenzy:739).exists ]
use(#1)
change(next)
-----END PET BATTLE SCRIPT-----

The NPC's for the Family Battler of Eastern Kingdoms achievement can be found in the following locations from the north to south:
It doesn't seem that besides going up to level 25 there are any changes to the pets. Zunta still uses two pets which are both common in rarity when engaged with a full level 25 team.

Notes:
The battles are daily, this means that to complete the meta you will need to revisit the trainers for a total of 10 days.
And to avoid anything not completing it seem it is best to complete these on an alliance character.

• 
  
• Deiza Plaguehorn in Eastern Plaguelands. Her pets are Beast - Beast - Undead.
• 
  
• David Kosse in The Hinterlands. His pets are Beast - Magic - Critter.
• 
  
• Kortas Darkhammer in Searing Gorge. His 3 pets are Dragonkins.
• 
  
• Durin Darkhammer in Burning Steppes. His pets are Flying - Critter - Elemental.
• 
  
• Lindsay in Redridge Mountains. She uses 3 Critter pets.
• 
  
• Everessa in Swamp of Sorrows. Her pets are Beast - Aquatic - Flying.
• 
  
• Lydia Accoste in Deadwind Pass next to Karazhan tower. Her pets are Undead - Elemental - Undead.
• 
  
• Julia Stevens in Elwynn Forest. She seems to be using 2 Beast pets.
• 
  
• Old MacDonald in Westfall. His pets are Flying - Mechanical - Critter.
• 
  
• Eric Davidson in Duskwood. He uses 3 Beast pets.
• 
  
• Steven Lisbane in Northern Stranglethorn Vale. His pets are Magic -Beast - Beast.
• 
  
• Bill Buckler in The Cape of Stranglethorn. His pets are Humanoid - Flying - Flying.
• 
  

Quick list for Paste/Tomtom:

/way #23 67.0 52.4 Deiza Plaguehorn
/way #26 62.8 54.6 David Kosse
/way #32 35.6 27.8 Kortas Darkhammer
/way #36 25.6 47.6 Durin Darkhammer
/way #49 33.2 52.6 Lindsay
/way #51 76.6 41.6 Everessa
/way #42 40.2 76.6 Lydia Accoste
/way #37 41.6 83.6 Julia Stevens
/way #52 60.8 18.6 Old MacDonald
/way #47 20.2 44.2 Eric Davidson
/way #50 46.0 40.6 Steven Lisbane
/way #210 51.6 73.4 Bill Buckler