First is a Herreschoff 12-1/2, aka Doughdish, designed by Nathaniel Herreschoff.
Second is a Penguin, designed by Philip Rhodes. My dad built a penguin in around 1960 but only attempted to sail it once because there wasn't a good place to launch it in those days near Santa Monica. Got swamped in the shore break at the Santa Monica pier and he didn't try sailing again until 1963 when he bought a Cal 20 after Marina del Rey was opened.
Third... I have no clue.
Tom K