I am not trolling or negotiating with you, I am telling you who the 'Muhajirs' generally are in the historical sense. They are Hindustani, as I am too. Bharat is not part of my ancestral identity. Some Bharatis could be Hindustani in the cultural sense.
Two ancient Bharati cousin tribes had a war, probably around 500 BCE and they would have gone separate ways. I believe that is the foundation of 'Pakistani' history in relation to 'Bharat'. The Indus region become part of the Persian empire around that time and later got occupied by the Greeks, until a Hindustani empire (Maurya) liberated it.