What is the authenticity of the narrations reported from the Prophet, may Allah's prayers and peace be upon him, during the Farewell Pilgrimage regarding the virtue of teachers and memorizers of the Qur'an?

Teaching is the function of prophets. The Hadith "The best of you are those who learn the Qur'an and teach it" has been narrated regarding the virtue of the Qur'an teacher.

However, the Ahadith mentioned in the question are weak or fabricated, including:

"Teachers are the best of people. Whenever the remembrance of God is renewed, honor them, and do not employ them in a way that burdens them. For when the teacher tells the child to say: 'In the name of Allah, the Most Gracious, the Most Merciful,' and the child says: 'In the name of Allah, the Most Gracious, the Most Merciful,' Allah records a release for the child, a release for his parents, and a release for the teacher from the Fire." "Three people will not be terrified by the Great Terror..." "O Allah, forgive the teachers - three times -, prolong their lives, and bless their earnings." "O Allah, forgive the teachers, prolong their lives, and shade them under Your shade, for they teach Your Book."

Sheikh Muhammad Rashid Rida mentioned a number of fabricated Ahadith regarding the virtue of the teacher, including:

"O Allah, forgive the teachers, lest the Qur'an depart, and empower the scholars, lest the religion depart." "Whoever teaches a servant a verse from the Book, then that servant is his." "Prophets are leaders, jurists are masters, and their company is an increase [in goodness]." "A questioner asked the Prophet, peace and blessings be upon him, about the knowledge of the inner (batin): What is it? He said: I asked Gabriel about it, and he said: Allah says: It is between Me and My beloved ones, My allies, and My chosen ones. I deposit it in their hearts. No one is privy to it, neither a close angel nor a sent prophet." "Whoever sets out in search of knowledge, the angels encompass him with their wings, and the birds in the sky and the fish in the seas pray for him, and he descends in the heavens to the ranks of seventy martyrs." "Whoever learns a chapter of knowledge to teach it to people, seeking the countenance of Allah, Allah will grant him the reward of seventy prophets." "Indeed, the people of Paradise will be in need of scholars." "Seeking knowledge for an hour is better than praying a night, and seeking knowledge for a day is better than worshipping for three months." "When a student sits before a teacher, Allah opens seventy doors of mercy for him." "Whoever visits scholars has visited me, whoever shakes hands with scholars has shaken hands with me, whoever sits with scholars is as if he has sat with me, and whoever sits with me in this world, I will make him sit near me on the Day of Resurrection." "The elder in his people is like the prophet in his nation." "The scholars of my nation are like the prophets of the Children of Israel."