grayman

I was watching this movie the other day and this line once again caught my ear,

"You'll need a Boesky, a Jim Brown, a Miss Daisy, two Jethro's, a Leon Spinx, not to mention the biggest Ella Fitzgerald ever."

I realize that these are obviously slang terms for different types of specialists in the heist world, but does anyone know which is which? I searched google and came up with nothing. Any help would be appreciated.