Is it in the rubrics? I haven’t seen it done.
Here:
sanctamissa.org/en/rubrics/
in the Gospel section, it says “When the name of Jesus is mentioned, the head is bowed towards the book…”
A bow towards the Cross is indicated at the Oremus.
God Bless
It also says in your link (good link, by the way):
"…He then makes a profound bow to the Altar or the image of the Crucifix above it. If, however, there is a Tabernacle containing the Blessed Sacrament on the Altar, he genuflects and pays it due reverence…
Further,
“Then he returns to the middle of the Altar, reverences the Crucifix, turns toward the Epistle side…”
Still further,
“The Deacon and Subdeacon from this point henceforth assist the Celebrant when he incenses, and when they pass before the Cross, they always genuflect…”
“Then, with hands joined as before, he turns around the same way to the book, where he extends his hands, and joining them before his breast, bowing his head toward the Cross, he says: 'Oremus.”…
“Then the Priest himself in read Masses, or else the minister, carries the Missal to the Gospel side of the Altar, bowing to the Cross as he passes in front of the Altar…”
Bows to the Cross again in the Credo, “Jesum Christum,” “simul adoratur,” before the preface, “Deo nostro,” Communicantes “Jesu Christe,”
I stopped there.