It's not that Graft just decided to deprive those three. He doesn't know which Mamoru is the real one, only that there are so many that he would max out Open Line and cause himself mana burn before reaching them all, so he contacted none of them in favor of making sure everyone else got one. He knows that Charme's domain blocks skills like Open Line and didn't know she was out, so he didn't try contacting her. And since Open Line only works on those who are explicitly (not just technically) his allies, which in the New World is a culmination of several mental considerations and factors both giving and receiving, he couldn't contact Chuunitrixx.

Tabula and Papillary are also following orders and going to Climax Hour.