Yes, Bjork is a legend. She's always been ahead of her time, and is one of the most influential alternative/electronic artists ever. Certainly one of the most, if not the most, influential female in those genres. She also had some of the best and critically acclaimed albums of the 1990s and 2000s. Her fashion is legendary as well. The swan dress alone. >>>>>
Moreso than the majority of artists previously mentioned.
She may not have had masses of commercial success or prominence, but ask any person that works in music and they'll spend hours telling you how amazing and revolutionary Bjork was and is. People here seem to dislike her music and not know who she is so don't think she's a legend (either due to those or due to her lack of commercial success) but seriously, her prescence is know by anyone that's at least somewhat passionate about music.