Some handbag designers I like are: Le Sportsac, Whiting & Davis, Moschino, Be & D, Versace, Dolce & Gabbana, Lulu Guiness, Cole Haan, Salvatore Ferragamo, Bottegga Venata, Micheal Kors, and Paul Frank.
Two other more notable designers are Liz Claibourne, because when I was growing up my mother would always mention her as a designer, she has very classy items that are not as extremely expensive as some other well known designers. But my all-time favorite designer whose work I think is the most innovative and orignal is Isabella Fiore. She combines folk-style, class and an artistic vision that can be a little over-the-top for some designers, but she pulls it off nicely. I think that these designers are some innovators in their field.
*Disclaimer---Since, as I have stated previously I am not rich, I have never purchased any of these designers' bags (with the exception of Liz Claibourne), and any that I may own were given to me. Even if I were rich I hope that I would not make it a habit to spend thousands of dollars on an article of clothing or accessory, when there are so many other worthwhile causes that I could spend the money on.