His personality could be more open - minded. Since he's exposed to an alien culture from a young age, he might not have the same prejudices as other ninjas. He'd be more curious about different beings and ideas.
If Naruto was raised by Maleficent in fanfiction, his personality would likely be a mix of his original tenacity and Maleficent's darker traits. He might be more distrustful of others initially. For example, instead of his open - hearted approach in the original series, he could be more guarded. His sense of justice might also be warped. He could see things in a more black - and - white way like Maleficent does, rather than the more complex view of right and wrong he had before.
Naruto's personality would develop in a more complex way. With Kurenai as a mother figure, he'd be more empathetic and in tune with others' emotions. Anko would add a bit of rebelliousness to his character. He'd still be determined like in the original story, but his way of achieving his goals would be more refined. He might be more secretive too, as he'd learn from Anko that not everything needs to be out in the open all the time.
His personality would likely be more fierce. Kyuubi's influence could make him less patient with those who oppose him. He might not be as friendly and naive as in the original Naruto. He'd be more self - reliant, relying on his own and Kyuubi's power rather than seeking help from others.
Harry could become more secretive and distrustful. Growing up with Bellatrix, who is part of the Death Eaters and has a lot of secrets, Harry would learn to keep things to himself. He may not trust others easily, even those who seem friendly, as he has been brought up in an environment full of lies and hidden agendas.
If raised by Rias, Naruto's personality would transform. He'd be exposed to a different set of values and power structures. His natural exuberance would be tempered by the more formal devil society. He might become more diplomatic, learning from Rias how to handle different personalities within her peerage. However, his sense of adventure and his desire to prove himself would still be there, just manifested in different ways within the context of the devil world.
Naruto's personality would likely become more reserved and intellectual. Robin's influence would make him think before acting, rather than just charging in like he often does in the original series. He might also develop a more sophisticated sense of humor, influenced by Robin's dry wit.
Naruto's confidence would likely be different. Instead of the somewhat brash confidence that came from constantly proving himself in the original story, he would have a more serene and assured confidence, based on Hagoromo's teachings. His understanding of the world would be more profound from the start. He wouldn't view enemies as simply 'bad guys' but rather as products of a flawed system. His sense of justice would be more complex and far - reaching. He would strive for a more global peace rather than just the protection of his village. Also, his relationship with Sasuke would be less about rivalry and more about shared understanding. They would both be on a path towards a greater good, and Naruto would be more able to communicate his ideas to Sasuke, preventing some of the rifts that occurred in the original story.
Since McGonagall has a strong sense of justice, Harry would probably have an even more acute sense of right and wrong. He would grow up with her values of fairness and loyalty deeply ingrained. This could lead to him being more proactive in standing up for others who are being wronged, not just because of his own experiences, but because of the values he was taught by McGonagall.
The plot could start with Naruto growing up in a happy family. He'd learn about the village and ninja ways in a more positive environment. His first missions might be more successful as he has his parents' advice. As he grows, he might face threats to the village earlier, but with his family by his side, he'd be better equipped to handle them.
His personality would likely be more assertive and less naive. Anko's boldness and Kurenai's intelligence would rub off on him. He'd be quicker to make decisions and not as easily swayed.