From 2e Encounter Tables

Aarokocra
Anakore
*Ant, Giant
Antloid, Desert
B'rohg
*Basilisk, Dracolisk
Bat, Large 
Beetle, Agony
*Brambletree
*Brambleweed
Bulette
*Burnflower
*Centipede, Giant (Monstrous Centipede)
*Centipede, Megalo- (too big?)
*Cha'thrang
*Cloud ray (too big?)
Crystal spider
Desert Giant, Athasian
Dragonne
Drake, Earth
Drake, Fire
Drake, Water
*Dune Runner
*Dune Trapper (too big?)
Dwarf
*Dwarf banshee (make a "normal" banshee)
Elves
Gith
Erdland
*Fire scorpion
Gaj
*Genie, Djinn (Jann?)
Heavy crodlu
*Hornet (giant)
Id Fiend
Inix
Insect Swarm, Athasian
Jankz
Jozhal
Kank
Kank, Wild
Kes'trekel
Earth Elemental, Lesser 
Lizard, Giant
Lizard, Minotaur
*Megapede (too big?)
Nightmare Beast
Nikaal
Razorwing
*Red silt horror
*Remorhaz
Cactus, Rock
*Sand Bride
*Cactus, Sand
*Sand Mother
*Sandling
Scorpion, Huge
Scrab
*Silt Runner
*Sink Worm (too big?)
Skeleton
*Snake, Constrictor
*Snake, Giant Constrictor
*Snake, Spitting
So-ut (needs advancing)
*Cactus, Spider
Spider, Large
Spider, Phase
Spirit of the Land (all unique)
*Spotted Lion (Dire Lion?)
T'chowb
Tagster (Cat, Psionic)
Thrax
Thri-kreen
Tohr-Kreen
*Wasp (Giant)
Wild mul
Wyvern (Needs advancing?)
Yuan-Ti
Zhackal
Zombie
*Zombie, Ju Ju
*Zombie, Monster





Sea of Silt

Aarakocra
Bat
Beasthead Giant, Athasian
Black Silt Horror
Brain Seed
Brown Silt Horror
Burnflower
Cloud Ray
Demihumans
Desert Giant
Dune Runner
Dwarf Banshee
Earth Drake
Erdland
Fire Drake
Floater
Giant-Kin, Cyclops
Gray Silt Horror
Id Fiend
Insect Swarm, Athasian
Kes'trekel
Plains Giant
Pterrax
Razorwing
Red Silt Horror
Roc, Athasian
Rock Cactus
Ruktoi
Sand Vortex
Silt Runner
Silt Skimmer
Sink Worm
Spirit Of The Land
Thrax
Undead
Villichi
Water Drake
White Silt Horror
Zombie