I agree with Lindy. They're a local insurgent group operating in their own state. Foreign sanctuary and funding notwithstanding they are a very local group and have no wider aspirations outside of Afghanistan. Ergo they're not a terrorist group but rather than insurgent one because of the lack of true global (or even regional) operational capacity.
Actually HQN is backed by ISI, Muslim Brotherhood and the Afghani Taliban... China has been backing Pakistan also, so indirectly the Chinese are backing HQN ...and there is an Indonesian arm of HQN tied to the Indonesian Taliban and Muslim Brotherhood. all of which are globally funded through 'donations' and shell businesses in various parts of the world. There are sub Saharan arms of all 3 noted organizations tied to the local tribal conflicts in the pan African conflicts promulgated by the Soviets/Chinese backing the Islamic insurgents.
A mod/admin may edit/delete/redact as needed if any of this is not for public consumption.