Amongst Harry’s competencies in magic you forgot neuromancy, Harry has used it to charm the Little Folk, to seduce the shadow of a Fallen Angel and to enrage enemies like Nicky into making mistakes. It’s what did for Hannah.
I don't think Harry is a neuromancer.. He charmed the Little Folk by appreciating their service to him by rewarding them with something they value, pizza. He also valued them as beings when he insisted that they be freed from captivity by the White Court. None of that has anything to do with neuromancy.
He has a stronger will than most, I think that it is part of his star born make up.. Once he understood that Lasciel's shadow was in his head and her plan, he resisted with his will and was able to use her power where possible, though he did put himself in danger of going over the line at times. He renamed her, and by his decency won her over, you can call that seduction, but not neuromancy..
What pissed Hannah off was when he reversed the Red King's generational curse, it killed all the Red Court Vamps off and that part of humans who were half turned. A lot of her friends were fighting for the resistance it was true, but many of them had been doing it for many years because the vamp part of them kept them from growing old. However when the vamp part of them died, the human part became whatever age he or she was, and many simply died of old age.. That had nothing to do with neuromancy.
