Why is there not a hardcore and vos category for ng+

Because the Route for HC and VoS is basicly the very same: You dont pick up anything, so you always run the very same line. U have the same weapon/inventory loadout,... Because the runs are basicly the same, there is only casual as the NG category. You can BTW run on VoS and also submit it to the board. Just expect it to be slower, but besides that, not any different from the other modes