Bernardino Luini, Andrea del Castagno, Andrea Solari, Giovanni Antonio Boltraffio,Giovanni Ambrogio de Predis
(c. 1480/82 – June 1532) It's said he learned "as much from Leonardo as his native roots enabled him to comprehend" Worked in Leonardo's studio and some of his art is so similar to Leonardo's that it has been confused with his.
Andrea del Castagno:
Andrea di Bartolo di Bargilla - Nicknamed "Andrea degli Impiccati" 1421 -August 19, 1457 - His Last Supper Influenced Leonardo's Last Supper.
1460-1524, Initially named Andre del Gobbo and also Andrea del Bartolo, a name curiously shared with two other painters. Andrea is also a title that Salai used for his paintings. He was a follower of Leonardo da Vinci
Giovanni Antonio Boltraffio
Giovanni Antonio Boltraffio (or Beltraffio) (1466 or 1467 – 1516) Worked with Leonardo in his studio.
Giovanni Ambrogio de Predis
(c. 1455 – c. 1508) Collaborated with Leonardo on the Virgin of the Rocks.