I figured I'd help out with figuring out what the current ZEM's are so we have some data.
Agnarr
Level 1 Dark Elf Wizard
Zone: Neriak Forest
Killing a level 1 an araneidae spiderling gave me 5% experience.
Killing a level 1 a black wolf gave me 10% experience.
Killing a level 1 a garter snake gave me 15% experience.
Killing a level 1 a garter snake gave me 21% experience.
Killing a level 1 a garter snake gave me 26% experience.
Agnarr
Level 1 Human Monk
Zone: North Qeynos
Killing a level 1 a gnoll pup gave me 5% experience.
Killing a level 1 a large rat gave me 10% experience.
Killing a level 1 a gnoll pup gave me 15% experience.
Killing a level 1 a large rat gave me 21% experience.
Killing a level 1 a large rat gave me 26% experience.
Agnarr
Level 1 Dwarf Paladin
Zone: Butcherblock Mountains
Killing a level 1 a goblin whelp gave me 5% experience.
Killing a level 1 a goblin whelp gave me 10% experience.
Killing a level 1 a decaying dwarf skeleton gave me 15% experience.
Killing a level 1 a decaying dwarf skeleton gave me 21% experience.
Killing a level 1 a decaying dwarf skeleton gave me 26% experience.
I'll assume all the newbie zones have the same ZEM's so I'm not going through all of them.
If anyone else wants to contribute, please post away.