John the Apostle
John 20:18BSB·traditional attribution

Mary Magdalene went and announced to the disciples, “I have seen the Lord!” And she told them what He had said to her.

Matthew Henry Presbyterian @wholebiblehenry

St. Mark tells us that Christ appeared first to Mary Magdalene (Mar 16:9); that appearance is here largely related; and we may observe, I. The constancy and fervency of Mary Magdalene's affection to the Lord Jesus, Joh 20:11. 1. She staid at the sepulchre, when Peter and John were gone, because there her Master had lain, and there she was likeliest to hear some tidings of him.

Commenting on John 20:11-18

John Gill Reformed Baptist @doctorgill

Mary Magdalene came,.... Directly and immediately, being ready and willing to obey the commends of her Lord, with the utmost cheerfulness; and glad to go on such an errand, and carry such news to his disciples, even though her private interest and personal affection might have inclined her to desire to stay with Christ: and told the disciples that she had seen the Lord; not...

Jamieson-Fausset-Brown Reformed @jfbcommentary

Mary Magdalene came and told the disciples that she had seen the Lord, and that he had spoken these things unto her--To a woman was this honor given to be the first that saw the risen R edeemer, and that woman was not His mother. (See on Mar 16:9).