Abdul Hamid Lahori was an official historian during the reign of Shah Jahan, which makes option 2 the correct answer.

Option 1 suggests that Lahori was a military commander during the reign of Akbar, which is not accurate. Option 3 implies Lahori was a noble and confidant of Aurangzeb; however, Lahori served before Aurangzeb`s time and was not directly associated with him. Option 4 proposes that Lahori was a chronicler and poet during the reign of Muhammad Shah, but this is incorrect as Lahori served during Shah Jahan`s reign and not Muhammad Shah`s.

Hence, Lahori is known primarily for his work as an official historian under Shah Jahan, meaning option 2 is the correct choice.