Anyone have an answer? There is one dino I want to disable but not sure if there is a blacklist code for the ini?

To disable certain dino spawns, you need to go into the GAME.INI (not GameUserSettings.ini, very important!) and put in the command to block the spawn. To do this, you need the spawn code which is usually "Dino name_Character_BP_C". You can either replace the spawns with something else (you use the spawn code for the other dino in the second bracket), or leave it blank to just stop that type of dino from spawning. For example, using the Acro from this mod:

To JUST disable the acro spawns, you would use:
NPCReplacements=(FromClassName="Acrocanthosaurus_Character_BP_C",ToClassName="")

To disable Acro spawns, and make deino(s) spawn in those spots instead, you would use:
NPCReplacements=(FromClassName="",ToClassName="Deinosuchus_Character_BP_C")

Do this for any/all other dino spawns you wish to block and make sure you hit save and then close the .ini file before you try to open the game again or it won't take effect/might crash your game! Pretty sure the dino spawn codes should be in the mod info posts somewhere here! Hope this helps :D