Which ones do you like? (I like, in this order, the Koi Suwannagate #9, Peter Som #21 and #40; Tuleh #41 and the Chanel, #7.)
Interesting to me who is not included: Narciso Rodriguez, who also designed my favorite Obama t-shirt as well as Carolyn Bessette Kennedy's wedding dress, which put him on the map. New York Magazine describes his style as "Sexy, bold women's wear with a touch of Jackie O-whimsy."
Maybe he's doing the real deal and is being discrete, unlike the designer of a ring Obama is reported to be buying for Michelle to thank her for her support.