NCISG is not a component HQ; it is a tactical level entity under the CyOC as the Cyberspace Domain Component. JFCs are assigned Component HQs for specific operations. JSEC will not be assigned Components. There is currently a Standing Joint Logistic Support Group embodied at Mons, under a UK 1*.Nor do Brunssum or Naples. The component commands, LCC, ACC, MCC, NCISG and NSHQ are subordinate to Allied Command Operations (ACO), not the JFCs.The closest they get is when they are leading the NRF, but even then the bulk of the components are national contributions (NATO Force Structure) not from other NATO HQs (NATO Command Structure).
Ulm will generate the Joint Logistic Support Group (JLSG) for NRF rotations, and other missions, and will have subordinate national contributions under command for this purpose.
Suffice to say, I was down there at the beginning of July doing a site survey for their NATO CIS installation and am pretty well up to speed with these things.