I found what I think is a complete list here, It is crazy expensive long:
http://maxminis.com/Forums/tabid/104/forumid/58/postid/449134/view/topic/De fault.aspx
STANDARD ENCOUNTERS:
12 Hobgoblin Regulars/Warriors (Hobgoblin Archer WD)
5 Doom Hand Cleric (Hobgoblin Impaler)
3 Bladebearer Hobgobling (Bladebearer Hobgoblin Ab)
8 Hellhound (Chainmail Hellhound/Hellhound Harb)
3 human militia (Caravan Guards AF)
1 human sergeant (Dark Traveler DK)
1 human ranger (Human Wanderer Harb)
3 War Dogs (Hyena Harb)
1 6-headed hydra (currently customizing a Bulette)
3 goblin worg riders (Silent Wolf Goblins mounted on Timber Wolves/Silent Wolf Goblins and Timber Wolves seperated for when they aren't mounted)
5 wyvern (Wyvern Ab)
8 Hobgoblin Veterans (Hobgoblin Sergeant GOL)
1 Minotaur (Minotaur Harb/GOL)
1 Bugbear Sorcerer (Bugbear Footpad GOL)
1 Forest Giant (Formorian GOL)
1 Medium Green Dragon (Medium Green Dragon Ab)
2 Hobgoblin Sergeant (Hobgoblin Warrior De)
2 War Adept (Chainmail Hobgoblin Adept/Hobgoblin Talon of Tiamat DQ)
4 Hieracosphinxes/Gynosphinx/Androsphinx (Golden Protector DQ)
1 Large Red Dragon (Large Red Dragon De)
3/8* Manticores (Manticore GOL)
3 Doom Fist Monks (Doom Fist Monks DQ)
8/24* Blood Ghost Berserkers (Blood Ghost Berserkers WD)
1 Chimera (Chimera WD)
1 Human Knight (Chainmail Human Paladin/Sword of Heiroenous Harb)
1 Sage (Sage Ar)
4 Crimson Tiger Thugs (Human Bandit/Human Thug Harb)
4 Ettin (Ettin DK)
5 Goblin Warriors (Goblin Warriors/Skirmishers DE)--Also use these as riders for the Bluespawn Thunderlizards
1 Female Human (Slayer of Domiel UD)
3 Barghest (Barghest Harb)
2 Greater Barghest (Fiendish Dire Wolverine AF)
8 Blackspawn Raiders (Blackspawn Exterminator DQ)
5 Ogre (Ogre Harb/Ogre Ravager DE/Ogre War Hulk WD/Chainmail Ogre Trooper)
1 Goblin (Chainmail Goblin Sneak/Goblin Sneak Harb)
1 Worg (Worg Harb)
1 Kharn (Using Chainmail Demonic Gnoll Archer painted as a Hobgoblin)
2 Doom Hand Warpriest (Chainmail Hobgoblin Fighter)
3 Greenspawn Razorfiend (Greenspawn Razorfiend DQ)
5 Giant Owls/5 Elves (Griffon Cavalry DQ)
7 Wild Elves (Various Elves)
3 Giant Crocodile (Khumat [:D])
8 Lizardfolk (Lizardfolk Harb/Lizardfolk Rogue )
2 Zhul Mindbender (Urthok the Vicious DE)
1 Svaarith (Custom Halfling Ranger/Goblin Blackblade mod)
1 Eagle (Pre-Chainmail Celestial Eagle)
1 Medium Black Dragon (Medium Black Dragon DE)
1 Behir (Behir GOL)
6 Ghost Brute Lion/Ghost Dire Lion/Dire Lion (Dire Lion DE/Hellcat BW--I can hope, can't I?)
1 Large Grey Ooze (Ochre Jelly Ar)
1 Female Hobgoblin (Custom Hobgoblin Archer with whip)
6 Lesser Bonedrinkers (Kobold Zombies DQ)
1 Lich (Lich Necromancer GOL)
4 Hill Giants (Hill Giant Ar/Hill Giant Barbarian WD/Chainmail Hill Giant/Hill Giant Chieftain WD)
5 Bluespawn Thunderlizards (Redspawn Firebelchers DQ)
1 Large Blue Dragon (Large Blue Dragon DK)
4 Blue Abishai (Blue Wyrmling DE)
2 Wyvern Zombies (Wyvern Ab)
1 Bone Devil (Bone Devil Ar)
1 Female Elf (Take your pick)
1 Night Hag (Night Hag WD)
4 Bearded Devils (Bearded Devils Harb)
4 Wraiths (Wraith Harb/D&D Board Game Wraiths)
2 Erinyes (Erinyes Ar)
1 Barbed Devil (Barbed Devil AF)
1 Half-Dragon Hobgoblin (possibly a custom Gold Champion DE)
1 Aspect of Tiamat (Aspect of Tiamat DQ)
*-These quantities only occur in one low-probability encounter. They can easily be sent in waves, so the number preceding the dash should be more than sufficient.
ALLIES:
4 Lions of Brindol (Rackham Praetorean Guard)
1 Captain Ulverth (Rackham Deacon Tiberius)
10 Town Guard (City Guard GOL/Royal Guard UD)
~5 Dwarves Mercenaries (Gold Dwarf Soldier UD)
1 Human Cleric (Cleric of St. Cuthbert Ar)
1 Halfling Wizard (Halfling Wizard Ar)
1 Male Human (Sage repaint)
1 Female Elf Bard (Chainmail Grey Elf Warsinger)
RANDOM: (I'm listing the max. For my campaign, I'm using however many I happen to have and assuming that's what I roll for the quantity)
Also, if an encounter is in both the regular encounters and the random encounters, I've listed the highest quantity in the regular encounter.
1 Gray Render (Gray Render UD)
4 Centipede Swarms (Spider Swarm UD)
5 Dryads (Wood Woads DK)
4 Assassin Vines (No decent proxies)
1 Digester (No decent proxy)
2 Ettercaps (Ettercap GOL)
4 Large Monstrous Spiders (Large Monstrous Spider DE)
6 Giant Wasps (No decent proxies)
1 Girallon (Fiendish Girallon WD)
2 Owlbears (Chainmail Owlbear/Owlbear Harb)
1 Shambling Mound (Shambling Mound Harb/D&D Board Game Forest Expansion Shambling Mound)
1 Tendriculous (Treant GOL)
6 Trolls (Troll Harb/Troll Slasher )
14 Stirges (Stirge DQ)
1 Dire Boar (Chainmail Dire Boar/Dire Boar Harb)
1 Giant Stag Beetle (No decent proxy)
1 Chuul (Chuul Ab)
3 Harpies (Harpy DE)
1 Will-o'-wisp (Flameskull WD-wrong size, but it's as close as I've got)
1 Gibbering Mouther (Gibbering Mouther Ab)
1 Ochre Jelly (Ochre Jelly Ar--already used for the Gray Ooze)
4 Ghouls (Ghoul Harb)
1 Ghast (Ghast GOL)
4 Basilisk (Basilisk GOL)
1 Bulette (Bulette GOL)
4 Spider Eaters (No decent proxy)
6 Wights (Wight Harb/Terror Wight WD)
4 Ankhegs (Ankheg UD)
1 Huge Monstrous Spider (Huge Fiendish Spider DQ)
1 Yrthak (No decent Proxy)
6 Achaierais (Achaierai Ab)
6 Griffons (Griffon DK)
SUMMONS: Bad guys can summon up monsters too [:D]
4 additional (8 total) Blue Abishai (Blue Wyrmling DE)
20 Lemure (Lemure GOL)
4 additional (8 total) Bearded Devils (Bearded Devil Harb)--Since I only have 3 and they're ridiculously expensive, 3 are all that get summoned.
I'm still short ~35 key minis (I don't plan on filling out all of the random encounter or summon maximums). Once I get my hands on them all, I'll post pics [:D]