'Othello' is one of two white varieties of Oriental Hybrids with a yellow throat we have; the other is 'Dame Blanche'. It takes a careful observer to spot the small differences between these two. Care to try, they're side by each right below.
That careful observer will notice the difference in the amount of yellow in the throat.
In addition to the 2 white varieties shown here, we added a third in 2003 called 'Casablanca'