Power Line (20m) doesn't appear in the item listing, although it can be rolled up in MAS8. Some of the stuff in Versus mode doesn't appear anywhere else in the game, either, so since Versus mode doesn't add to your item collection, they aren't listed anywhere either.

Does anyone know of any other items like this?

hmmm, offhand no, it's been a while since i played KD, I know there are items like this in WLK though, like wet snow, etc.

I guess if they listed every item, it would be nuts, maybe next gen(if there is a game) will have tons and tons of items.