Was looking to port over some AOE maps from previous games and stumbled across the following on the age of empires fandom wiki.
Canyon
A deep canyon is all that separates players’ starting area.
Haunted Gulch
Teams isolated in mountain valleys, with a gulch of stealth forest between them.
Narrows
A large peninsula is surrounded on several sides by deep ocean.
Oasis
Most trees on the map sit near a small center lake.
Peagee
Forest completely enclose teams, giving time to build before battle commences.
Plains
A very flat, open map with resources that vary each time you play!
Qinghai Lake
A large central lake sits amidst a ring of rough outer land.
Rhinelands
Bountiful river valley with abundant resources and many rivers crossing.
River Kingdom
Players start on small islands between forks of a river.
The Channel
A narrow ocean channel separates two landmasses.
Turtle:
Teams are placed in their own defensible mountain valley.