POLISHED INFORMATION WILL BE PROVIDED WITH PROPER RELEASE. It takes time to document neatly and is WIP as with the spawns themselves.
This is not all spawns that are planned, just those that are currently added

To find the spawn location, find a vanilla spawn in a matching container on https://ark.wiki.gg/wiki/Spawn_entries

Then look at it in that creature in that container on the map https://ark.wiki.gg/wiki/Spawn_Map_(Lost_Island)



Plains

Gacha | Gacha_Character_BP_C: DinoSpawnEntries_Steppe_C
R Para | Para_Character_BP_Eden_C: DinoSpawnEntries_Steppe_C
R Daeodon | Daeodon_Character_BP_Eden_C: DinoSpawnEntries_Steppe_C
R Gasbags | GasBags_Character_BP_Eden_C: DinoSpawnEntriesGrassland_LostIsland_1_C, DinoSpawnEntries_Gen2_Lost_C


Redwoods

Featherlight | LanternBird_Character_BP_C: DinoSpawnEntriesRedwoods_LostIsland_C
R Direwolf | Direwolf_Character_BP_Eden_C: DinoSpawnEntriesRedwoods_LostIsland_C
R Thyacoleo | Thylacoleo_Character_BP_Eden_C: DinoSpawnEntriesRedwoods_LostIsland_C


Desert

No Untameables R JugBug | Jugbug_Character_BP_Rockwell_Tameable_C: DinoSpawnEntriesCanyons_LostIsland_C
Seeker | Pteroteuthis_Char_BP_C: DinoSpawnEntriesCanyons_LostIsland_C, DinoSpawnEntriesBadlands_LostIsland_C
Velonasaur | Spindles_Character_BP_C: DinoSpawnEntriesBadlands_LostIsland_C, DinoSpawnEntriesDesertMountain_LostIsland_C, DinoSpawnEntriesGreenDesert_LostIsland_C
Summoner | Summoner_Character_BP_C: DinoSpawnEntriesCanyons_LostIsland_C
Phoenix: Reborn from the Ashes Phoenix | CSPhoenix_Character_BP_C: DinoSpawnEntriesBadlands_LostIsland_C, DinoSpawnEntriesDesertMountain_LostIsland_C


Aberrant Cave

Glowbug | Lightbug_Character_BaseBP_C: AB_DinoSpawnEntries_BioCave_C
No Untameables Aberrant Water JugBug | Jugbug_Water_Character_BP_Aberrant_Tameable_C: AB_DinoSpawnEntries_BioCave_C
No Untameables Aberrant Oil JugBug | Jugbug_Oil_Character_BP_Aberrant_Tameable_C: AB_DinoSpawnEntries_BioCave_C
No Untameables Element JugBug | Jugbug_Element_Character_BP_Tameable_C: AB_DinoSpawnEntries_BioCave_C
Achatina | Achatina_Character_BP_C: AB_DinoSpawnEntries_BioCave_C


Snow

X Argent | Snow_Argent_Character_BP_C: DinoSpawnEntriesSnow_LostIsland_C
X Sabertooth | Snow_Saber_Character_BP_C: DinoSpawnEntriesSnow_LostIsland_C
X Wooly Rhino | Snow_Rhino_Character_BP_C: DinoSpawnEntriesSnow_LostIsland_C
X Yutyrannus | Snow_Yutyrannus_Character_BP_C: DinoSpawnEntriesSnow_LostIsland_C
X Procoptodon | Procoptodon_Character_BP_Eden_C: DinoSpawnEntriesSnow_LostIsland_C



Volcano

X Allosaurus | Volcano_Allo_Character_BP_C: DinoSpawnEntries_Volcano_LostIsland_C
X Ankylosaurus | Volcano_Ankylo_Character_BP_C: DinoSpawnEntries_Volcano_LostIsland_C
X Trike | Volcano_Trike_Character_BP_C: DinoSpawnEntries_Volcano_LostIsland_C
X Rex | Volcano_Rex_Character_BP_C: DinoSpawnEntries_Volcano_LostIsland_C
Ark Additions X Brachio | Volcanic_Brachiosaurus_Character_BP_C: DinoSpawnEntries_Volcano_LostIsland_C
Ark Additions X Concavenator | Volcanic_Concavenator_Character_BP_C: DinoSpawnEntries_Volcano_LostIsland_C
R Reaper Queen | Xenomorph_Character_BP_Female_Gen2_C: DinoSpawnEntries_Volcano_LostIsland_C
R Reaper King | Xenomorph_Character_BP_Male_Gen2_C: DinoSpawnEntries_Volcano_LostIsland_C


Swamps

No Untameables X Jugbug | Bog_Jugbug_Character_BP_Tameable_C: DinoSpawnEntriesSwamp_LostIsland_C
Featherlight | LanternBird_Character_BP_C: DinoSpawnEntriesSwamp_LostIsland_C
X Tapejara | Bog_Tapejara_Character_BP_C: DinoSpawnEntriesJungle_LostIsland_C
X Paraceratherium | Bog_Paracer_Character_BP_C: DinoSpawnEntriesSwamp_LostIsland_C
X Parasaur | Bog_Para_Character_BP_C: DinoSpawnEntriesSwamp_LostIsland_C
X Raptor | Bog_Raptor_Character_BP_C: DinoSpawnEntriesJungle_LostIsland_C
Ark Additions X Deinosuchus | Bog_Deinosuchus_Character_BP_C: DinoSpawnEntriesSwamp_LostIsland_C
Ark Additions X Acrocanthosaurus | Bog_Acrocanthosaurus_Character_BP_C: DinoSpawnEntriesSwamp_LostIsland_C
Karkinos | Crab_Character_BP_C: DinoSpawnEntriesSwampWater_LostIsland_C
Bulbdog | LanternPug_Character_BP_C: DinoSpawnEntriesSwampSmall_LostIsland_C
Shadowmane | LionfishLion_Character_BP_C: DinoSpawnEntriesSwamp_LostIsland_C
Roll Rat | MoleRat_Character_BP_C: DinoSpawnEntriesSwampSmall_LostIsland_C
Bloodstalker | BogSpider_Character_BP_C: DinoSpawnEntriesSwampSmall_LostIsland_C