Shoot wide, crop later: framing one picture for four places

A picture for a magazine page is 4:5, the same picture on a website banner is 16:9, and on a phone it is 9:16 (sample). If the frame is tight, one of them fails.
So each picture is framed at 3:2 with the subject placed where all the agreed crops still hold it. On the shot list, each line says which shapes it must work in.
On the day you see the crops marked over the picture on the laptop, before we move on.