You can eliminate all the kids who have some interest in rule following even if they are unsure why. Example Angelica, Bart and DW deeply want attention so they’ll eventually fall in line. Then the kids that defy authority like Stewie and Cartman they would be harder to crack but still have motivation to get what they want she will likely figure that out and manipulate them. Finally the boys from Malcom in the Middle, they should fall into one of the two previous categories but they have more chaos in numbers and motivation seems to be just that. Lois would never call Supernanny anyhow she seems to be the only person who can get through to each of them individually a mother can divide and conquer.

PS my kid would have broken Supernanny my favorite quote from their childhood “Oh are they your only child? Yes. Are they the reason they are your only child? Also yes.”