No, saints other than Our Lady have appeared in visions of seers. For example, St. Joseph appeared with the Christ Child at Fatima right before the Miracle of the Sun, and St. Gabriel Possenti appeared to St. Gemma Galgani, even before he had been canonized.
I stand corrected...on that one point. It’s still a scam.
Just pray the Rosary. Without regard to anybody’s trademarked version.