But the ISU now allows a jump to be landed on the opposite foot. For example a right handed double loop takes off on a rbo edge rotates twice and lands on a rbo edge. For the double loop the skater could also take off on the rbo edge rotate twice and land on the lbi edge. That would be considered a listed jump. (This would not be true for the single loop landed on the lbi edge, since the ISU considers this jump - the so-called half loop -- an unlisted jump.)
... On the other hand the inside Axel, that takes off on the lfi edge for a right handed skater is considered an unlisted jump since the ISU says to be an Axel it must take off from a forwards outside edge.