Many saints have visions and locutions. They are of the type mentioned: corporal, imaginative and intellectual. God makes Himself known on many levels. For most of us, He works through sour senses in an ordinary manner, but often He uses the things He created as signs if we are aware of looking for signs.
Very few souls are chosen through intense preparation to make reparation for the sins of another soul or for direct grievances against Our Lord and His Blessed Mother. As we readily know, because of the evils in our society, “the cup is brimming over.” One of these saints or venerables is Sister Josefa Menendez who was a member of a convent in Poitiers. She was unknown and unaccounted for in the world but chosen by Our Lord to suffer the pains of carrying His cross and wearing the crown of thorns for various periods. In other words, she was a “victim soul.” Sometimes Our Lord appeared to her as a baby and as a young child as well as an adult.
What I find extremely interesting about Sister Josepha’s account is her invitation to enter the wound of the side of Our Lord. She doesn’t explain what she sees. I don’t know about any qualia in a vision of this sort and can’t define whether it intellectual or not. Like other saints, including the St. John Vianney and St. Pio, she was attacked by the devil and beaten severely. She was also made to walk through hell and see the tortured souls. Many were saved on account of her prayers and sufferings even though she initially had felt repugnance to this way of reparation and just wanted to live the ordinary life of a Christian.
I think the visions of Fatima and Lourdes and Guadelupe might have been corporeal in nature. St. Teresa of Avila says, that corporeal visions are more likely to be false than the imaginative and intellectual in which the soul has certainty. But she adds that the devil can take any disguise and that sometimes she had what she called “false” visions. She discerned they were false because they exhorted a spirit of pride in her but that there were times she wasn’t always certain.
That all of our earthy knowledge comes from our senses is understood, but when it comes to spiritual matters, we really don’t understand God’s workings in souls other than that He infuses knowledge. For example, when a person of any age dies, including an infant, they both are given the knowledge, understanding and wisdom of all that is in the world and in heaven.
P.S. I can’t say I’m absolutely certain of the above, and I’d welcome any discourse or comment or correction.
Many blessings!