I can see why INFJ would be their dual. They need to be led and have things defined even though ESTJs pull out bullshit from beyond. I've met plenty of ESTJs and INFJs so I know what I'm saying. Without the ESTJ the INFJ will blurrrbbb and spaz all over without direction. INFJs also tend to be hypocritical and massive liars which the ESTJ serves the role of bringing confidence in a lie.