I thought Watchtower referred to the magazine of that name.
Watch Tower refers to the legal corporation as in Watch Tower Bible & Tract Society or Watch Tower Society of Britain.
So 1, 3, 4 and 7 I would say are incorrect as a magazine cannot change anything. The members of the corporation are the ones that make the changes and have them printed in the Watchtower magazine.
We used to use the term "The Society" many years ago.
George