All rounds are real outputs from the experiment, not synthetic. "Vanilla" means a plain "give one clue" prompt. "Anti-correlation" tells the model its teammates will pick the obvious clue. "ToM-explicit" tells the model its teammates share its training distribution. "Mixed family" means the four clue-givers are different models (Haiku + Sonnet + 2× Gemini Flash). Case differences ("Bread" vs "bread") count as duplicates after lowercase normalisation.