This information is pulled from the game data and may not reflect the final values/text or might be unavailable once the patch hits. Information is cleaned of stuff that appears to be disabled. Each of the mods has a radius of 55. A better list will be available at the wiki at a later point.

Id	Text	Raw stats
MapAtlasBossAdditionalUnique	Unique Boss drops 1 additional Unique Item	[('map_boss_dropped_unique_items_+', 1, 1)]
MapAtlasBossDropsCorruptedItems	Unique Boss drops Corrupted Items	[('map_boss_drops_corrupted_items', 1, 1)]
MapAtlasPlayersMonstersDamagePerCurse_	Monsters and Players have 20% increased Damage per Curse on them	[('map_players_and_monsters_damage_+%_per_curse', 20, 20)]
MapAtlasPlayersCriticalChance	Monsters and Players have 100% increased Critical Strike Chance	[('map_players_and_monsters_critical_strike_chance_+%', 100, 100)]
MapAtlasMonstersStealCharges	Monsters steal Charges on Hit 20% increased Quantity of Items found in this Area	[('map_monsters_steal_charges', 1, 1), ('map_item_drop_quantity_+%', 20, 20)]
MapAtlasUnIDedMapsGrantQuantity		[('map_unidentified_maps_item_quantity_+%', 30, 30)]
MapAtlasAdditionalRandomMod	Map has 1 additional random Property	[('map_number_of_additional_mods', 1, 1)]
MapAtlasBloodlinesDropAdditionalCurrency	Nemesis Monsters drop 3 additional Items	[('map_nemesis_dropped_items_+', 3, 3)]
MapAtlasContainsMaster	Area contains a Forsaken Master	[('map_contains_master', 1, 1)]
MapAtlasIncreasedDamageOnGroundEffects	While on Elemental Ground, 30% increased Damage of the associated Damage Type	[('map_damage_+%_of_type_inflicted_by_current_ground_effect_you_are_on', 30, 30)]
MapAtlasStrongboxContentsMirrored	Strongbox contents are Mirrored	[('map_strongbox_items_dropped_are_mirrored', 1, 1)]
MapAtlasCreepingAgony	20% increased Quantity of Items found in this Area Area contains Creeping Agony	[('map_item_drop_quantity_+%', 20, 20), ('map_contains_creeping_agony', 1, 1)]
MapAtlasPlayersPoisonedWhileMoving_	20% increased Quantity of Items found in this Area Players are Poisoned while Moving	[('map_item_drop_quantity_+%', 20, 20), ('map_players_are_poisoned_while_moving_chaos_damage_per_second', 200, 200)]
MapAtlasCursesReflected	10% increased Quantity of Items found in this Area Curses are Reflected	[('map_item_drop_quantity_+%', 10, 10), ('map_players_and_monsters_curses_are_reflected', 1, 1)]
MapAtlasMagicItemsDropAsNormal	Randomly dropped Items are Normal instead of Magic 10% increased Quantity of Items found in this Area	[('map_magic_items_drop_as_normal', 1, 1), ('map_item_drop_quantity_+%', 10, 10)]
MapAtlasContainsAdditionalRandomBoss	Area is inhabited by 1 additional Invasion Boss	[('map_num_extra_invasion_bosses', 1, 1)]
MapAtlasContains3LessPortals	20% increased Quantity of Items found in this Area Map contains 3 fewer Portals	[('map_item_drop_quantity_+%', 20, 20), ('map_contains_x_fewer_portals', 3, 3)]
MapAtlasWeaponsDropAnimated	Living Weapons	[('map_weapons_drop_animated', 1, 1)]