To the right is a drawing by Gamble Staempfli, a student at Bard College. The Leonardo drapery study to the left gave Gamble the skills and the idea for the chain link "posed" to reiterate the compostional quality of the Leonardo.
Above are three different studies of the same Cambiaso drawing.
Leonardo diptych by Ami Mehta.
Study after Rubens by Mozghan Sabba in various stages.
In her diptych, Kirsten Ryder likened the movement of the Tintoretto to a shell.