Quoted By:
So you guys see in the wild encounters listing the multiple tables and slots? Well with evidence I've compiled from other people's experience, I have an idea on what's up. So let's start with the known. When you use an Adrenaline Orb to trigger an SOS battle, the opposing pokemon can call for help if they are at low health. The called pokemon tends be that same pokemon as the caller. Sometimes however the pokemon called is different, whether it be an evolution or a predator/prey relationship. I've seen images of the former (Magikarp and Gyarados, Pancham and Pangoro), and I know the second is one of the most reliable ways to get Mareanie (Corsola) and Sableye (Carbink). I've had an anon confirm that he's seen a Cleffa call a Chansey, which are both unrelated and not in a predator/prey relationship. Now from what I see in the tables, Magikarp, Pancham, Corsola, Carbink, and Cleffa appear in slot 1, while the special pokemon they call have been in other slots. They are in the same 'spot' in the equivalent slots. Now this may be a coincidence, but I highly doubt that.
I think that when you encounter a pokemon in a certain table set, it is a slot 1 encounter. When a pokemon calls for help, it tends to favor picking a pokemon in the same slot, but sometimes it goes to a different slot in an equivalent spot. That would explain all of those different pokemon from SOS battles. Now I would like some evidence from people with the game, here and elsewhere.
pic unrelated