I thought people might find this useful, so here is a list of the maplocations found in the "icon_maplocations" folders:
REGULAR:
Alpine_Asia
Alpine_Europe
Alpine_Worldwide
Boreal_America_North
Boreal_Worldwide
Desert_Africa_North
Desert_Worldwide
Grassland_America_North
Grassland_Worldwide
Rainforest_Africa
Rainforest_Africa_Central
Rainforest_America_South
Rainforest_Asia_SouthEast
Rainforest_India
Rainforest_Madagascar
Rainforest_Worldwide
Savannah_Africa
Savannah_Africa_East
Savannah_Africa_South
Savannah_Madagascar
Savannah_Worldwide
Scrub_Africa_South
Scrub_Australia
Scrub_Worldwide
Temperateforest_America_North
Temperateforest_Asia
Temperateforest_China
Temperateforest_Europe
Temperateforest_India
Temperateforest_Worldwide
Tundra_America_North
Tundra_Antarctica
Tundra_Arctic
Tundra_Worldwide
Wetlands_Africa
Wetlands_America_North
Wetlands_Worldwide
ES:
Boreal_America_North_Sequoia
Boreal_Asia
Desert_America_North
Grassland_Asia_Central
Rainforest_America_Central
Savannah_Africa_South_GiantSable
Savannah_South_America
Scrub_America_South_West
Scrub_Asia_SouthEast_KomodoIsland
Scrub_Europe_Spain
Temperateforest_America_South
Temperateforest_Asia
Temperateforest_Australia
Temperateforest_Spain
Wetlands_America_North_Pitcherplant
Wetlands_Asia_SouthEast
Wetlands_Florida
AA:
Alpine_Africa_Northeast
Grassland_Africa_Asia
SCrub_Africa_Asia
TemperateForest_Africa_NorthWest
MM2:
benthic_coasts_worldwide
benthic_warm_oceans_worldwide
coastal_carribean_atlantic_ocean
coastal_coasts_worldwide
coastal_east_pacific_coast
coastal_north_pacific_coasts
coastal_southern_ocean_islands
coastal_warm_oceans_worldwide
pelagic_arctic_ocean
pelagic_atlantic_ocean
pelagic_warms_oceans_worldwide
reef_indian_pacific_oceans
reef_warm_oceans_worldwide
tundra_arctic_antarctic_oceans
tundra_arctic_ocean