a few names to add to the hats you posted.
The red hat: Viva La Rouge
The sailor hats: Key of the Sea
Black hat with red detail: At the Races
Also, there are a few listings on eBay for Hatitudes hats right now or that have recently ended. They include a few of the hats you posted, and a few other hats:
According to the eBay listing, the white one is called Garden Party and the purple one is called Love Affair.