I don't think they can be considered "Human". A human being is he who can think and act humanely, i.e. With compassion, love, mercy, sympathy etc.And not merely driven by instincts.
Here is where zombies differ from human. They may be more intelligent or cunning, but they are no way closer to being human other than their looks. They are more close to beasts.
I don't consider them as "Human". As far as mutants are concerned (if mutants are like what they had shown in movies like X-Men), they are more humane than zombies. Genetically modified human beings are not necessarily inhumane.
They may have supernatural powers, but that does not necessarily prevent them from being good at heart or sympathetic and neither does that necessarily make them ferocious. Mutants can be more compassionate if they are so genetically mutated. Finally, about necro-zombie mutants, they are as good as any other zombies (reasons explained in the first paragraph) and I don't consider them "Human" even if they have human body.
Note: About the movie, I have seen the movie and it is nice. The concept is a bit different from other mutant movies.Thanks.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.