I think we all agree EVERYONE has the capability to manipulate. I also think people can manipulate knowingly or unknowingly.

All Cluster B PD's manipulate, but for different reasons.

What separates the manipulative tactics of a person with BPD and a NON is the intent/motivations behind the manipulation. I'm not sure I fully agree that a person with bpd manipulates for attention, but more to do with the need to feel liked/loved/important to the person they're manipulating. I'm fairly good at catching and preventing myself from manipulating people in this way. It's basically asking myself the question why am I doing something for someone. Am I doing it out of the goodness of my heart with no expectations in return or am I really doing it because I want the person to show me the same or similar gesture in return so I can feel liked/loved/important. If I'm expecting something in return I either change my mindset or just don't do it.

A NON is more apt to manipulate for some other reason that doesn't involve the need to feel liked/loved/important etc. I'm NOT saying though that they can't manipulate for those reasons, but more unlikely.

A person with a PD though can manipulate and the manipulation has nothing to do with their PD. The need to feel loved/liked/important is what differentiates the two forms of manipulation.

******* I'm tired so I hope that makes some sort of sense.