Seperate nordic skiing

As far as segments are concerned, MTB, road, and gravel are all under the same “bike” category.  They have only recently been split out into their own separate sub-categories, but are combined for any leaderboards.  Same with e-bike and e-mountain being combined together.  Those and velomobile are very different activities altogether from regular biking.  

I do agree that it would make sense to split skate and classic ski into two sub-categories, but still should remain under the “nordic ski” main sport type.