The most recent food insulin index data definitely confirms that fibre does not require insulin. (KetoDietApp.com)
Most dairy foods have very low GI score (15 - 30) but very high Insulin Index scores (90 - 98). (idmprogram.com)
The high fiber content in raisins help make them slower to digest and leads to a fairly low glycemic index around 60 and lower insulin index (19, 20). (alivebynature.com)