ThatsAmore's list "Compilation of I names" of 6 great name ideas: Iselle - Izella!

Compilation of I names

Compilation of names beginning with the letter “I” 
-  (Dear Nameberry, can we please go back to not needing the long 15 letter word description?)

Iselle was a hurricane during the 2014 season, Iselle is thought to be drawn from the Nahuatl word icel, meaning unique or only. Iselle could fit right in with recent favorites like Isabelle and Giselle.

Iselle

The rise of the the various Isabel names may give a boost to this variation, which has a sunny, springtime feel. 
 Although this name has been around since the thirteenth century, its origins remain obscure.
 Ismay has appealed to several authors as a character name--Robertson Davies in his Cornish Trilogy, Ruth Rendell in The Water's Lovely, and Ken Follett in his World Without End.
 Caveat: Could be confused with Esme.

Ismay

This contracted form of Isadora makes for a more concise name that might catch the attention of modern parents.

Isora

Usually seen in the Appalachian Mountain region.

Izetta

Izola is a feminine given name with multiple possible origins. It may be derived from the Italian city of Isola, meaning 'island' in Italian. Alternatively, it could be a variant of Isabel/Isabella (of Hebrew origin meaning 'pledged to God') or Isolde (a name from medieval Arthurian legend). The name appears in historical records in the United States dating back to the late 19th century, though it has always remained relatively uncommon. A notable bearer was Izola Curry, a historical figure from the Civil Rights era. The name saw modest usage through the early-to-mid 20th century but became increasingly rare after the 1950s. Izola has a melodic quality with its succession of open vowel sounds that gives it a distinctive lyrical quality.