Got tired of testing for hours so made a mod to do spawns which can be found here
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=874999534

These Settings go in your GameUserSettings.ini
Be sure the Ark Dino Spawner is installed. Admin spawns in 6 spawners and names them the following names:

Indom1
Indom2
Indom3
Orc1
Orc2
Orc3

or:

Idom1H
indom2H
indom3H
Orc1H
Orc2H
Orc3H

Indom1 or Indom1H is required and spawns 5 indoms within 60 foundations of itself.
Spawner is highly configurable!

Once Indom1 or Indom1H is placed and named, activate it. The rest of the spawners only need to be placed and named.

All Indom spawners spawn 5 indoms maximum each within a 60 foundation radius of the spawner.
Orc1 and Orc2...normal and hard spawn 3 orcs each. Orc3 spawns 4 Orcs. All within a 60 foundation radius of the named spawner.

Normal

[JoanIndomMod]
IndomCount=-1
IndomHCount=-1
NoWildAggro=false
OrcCount=-1
OrcHCount=-1
DisableSpecialAttacks=false

[ArkSpawner]
ASpawnerName=Indom1,indom2,indom3,Orc1,Orc2,Orc3
ABossSpawnTimer=3600
ADinoClassNames=IndomRex_Character_BP_C,next,IndomRex_Character_BP_C,next,IndomRex_Character_BP_C,next,Orc_Character_BP_C,next,Orc_Character_BP_C,next,Orc_Character_BP_C
AHowMany=5,next,5,next,5,next,3,next,3,next,4

Hard

[JoanIndomMod]
IndomCount=-1
IndomHCount=-1
NoWildAggro=false
OrcCount=-1
OrcHCount=-1
DisableSpecialAttacks=false

[ArkSpawner]
ASpawnerName=Indom1H,indom2H,indom3H,Orc1H,Orc2H,Orc3H
ABossSpawnTimer=3600
ADinoClassNames=IndomRexH_Character_BP_C,next,IndomRexH_Character_BP_C,next,IndomRexH_Character_BP_C,next,OrcH_Character_BP_C,next,OrcH_Character_BP_C,next,OrcH_Character_BP_C
AHowMany=5,next,5,next,5,next,3,next,3,next,4