Unfortunately, the Instinct Raw Boost Kibble has about 31% carbs so definitely not a good choice for a diabetic cat. If you are located in the US there are a few better low carb options including EVO Cat and Kitten, Wysong Epigen 90, and Young Again (only available online). If you are in Canada, the lowest carb kibble is Petcurean Fit and Go at about 14% and Instinct Ultimate Protein or Instinct Grain Free at approx. 17%. If you are elsewhere, there may be options that other members could lead you to if you let us know where you are located.
Is there a particular reason you want kibble?