What I've put together thus far for these found in the Eastern Kingdoms.
Eastern Kingdoms
Alliance Battle Pet Tamers
Julia Stevens – Level 2 – Elwynn Forest
2 Beasts (snakes) USE Mechanicals with wind-up and supercharge.
For best results: Wind-up, supercharge, wind-up, repeat.
My choices: (FF)Fluxfire Feline, (D)Dibbler, (LB)Lil'Bling (Level 4)
FF uses prowl, flux, claw and Fangs is dead. Slither enters. FF pushes claw to kill Slither.
Old Macdonald – Level 3 – Westfall
Mechanical, Flying, Critter USE Elemental, Magical, Beast
My choices: (PFS)Pandaren Fire Spirit, (MW)Mana Wyrmling, (LN)Lost Netherpup
PFS uses immolate, then pushes burn to kill Foe Reaper 800. Clucks enters. PFS uses immolate, cauterize, pushes burn to kill Clucks. Teensy enters. PFS uses immolate, cauterize, pushes burn to kill Teensy. If PFS dies, MW or LN will win with anything.
Lindsay – Level 5 – Redridge Mountains
3 Critters USE 3 Beasts (Spiders work best.)
My Choices; (FF)Fluxfire Feline, (MS)Mechanical Scorpid, (PR)Pocket Reaver
FF uses prowl, flux, claw
Eric Davidson – Level 7 – Duskwood
3 Beasts USE 3 Mechanical
My Choices: (PR)Pocket Reaver, (TH)Tiny Harvester, (CRB)Clockwork Rocket Bot
PR pushes metal fist to kill Webwinder. Blackfang enters. PR uses repair, then pushes metal fist to kill Blackfang. Darkwidow enters. PR trapped by web, uses metal fist before final death. TH enters and uses overtune, then pushes metal fist to win.
Steven Lisbane – Level 9 – Northern Stranglethorn
2 Beasts, 1 Magic USE 2 Mechanical, I Dragonkin
My Choices: (TH)Tiny Harvester, (FF)Fluxfire Feline, (AC)Albino Chimaeraling
TH uses overtune, then metal fist to kill Nanners. Moonstalker enters and TH uses metal fist until dead. FF enters and uses prowl then flux to kill Moonstalker. Emeralda enters. FF pushes claw to kill Emeralda. If AC needed, will win with whatever.
Bill Buckler – Level 11 – Cape of Stranglethorn
1 Humanoid, 2 Flying USE Undead, 2 Magic
My Choices: (LoL)Lost of Lordaeron, (HW)Hyjal Wisp, (MW)Mana Wyrmling
LoL uses siphon life, bone prison, shadow slash, siphon life, bone prison, shadow slash twice and Burgle is dead. Eyegouger enters. LoL uses siphon life, then pushes shadow slash till dead. HW enters and pushes feedback to kill Eyegouger. Young Beaky enters. HW uses wish, feedback, evanescence. Young Beaky lifts off and kills HW on next turn. MW uses drain power, then pushes feedback to win.