You have no way of distinguishing if the reason for duplicates are coincidence, players taste in pokemon being similar (if you didn't consider eevee you're lying), or your theory on scum being given duplicates.
Sunflower's phanpy and delibird are likely because she made a cutesy team (don't ask me about grimer lol) for example.
I wasn't sure if you were claiming a total of 4 actions on you last night (damage, steal, item, something else).
Speaking of steal, it would fit if Irish was additional item space + steal ability.
So does anyone want to take credit for the actions performed on shade, or are we living in a weird world where scum tries to deflect suspicion from town players?