Well, if the Malfoys raised Harry, it would likely cause a lot of conflict and changes. Their pureblood ideology could clash with Harry's natural sense of justice and kindness. Also, the relationship dynamics within the Malfoy household would have a major impact on Harry's character development.
If the Malfoys raised Harry, it'd be a wild ride. Harry might struggle to fit in with their snobbish ways and could potentially rebel against their beliefs. This could create all sorts of interesting plot twists and character arcs in the fanfic.
One possible fanfic could be 'Lily's Love and Care' where Lily raises Harry in a world without Voldemort's threat.
One common theme is family. It's about creating a new family unit with Remus, Sirius and Harry. They become a family that is different from the traditional ones in the wizarding world. Another theme is redemption. Sirius, who has been through a lot, and Remus, with his own insecurities, find redemption in raising Harry.
One common theme is family. These fanfics often focus on how Sirius and Remus create a loving and stable family environment for Harry, something he lacked at the Dursleys. Another theme is friendship. Since Sirius and Remus were friends with Harry's parents, their relationship with Harry is also about keeping the memory of his parents alive through their friendship.
The Malfoys could save Harry in fanfiction because of a personal debt. Maybe Harry once unknowingly did something that benefited the Malfoys greatly. This could be as simple as preventing a disaster from befalling their family business or saving the life of a family member secretly. When the time comes, the Malfoys feel obliged to return the favor and save Harry from whatever danger he is in. Also, it could be part of a complex plot where the Malfoys are trying to redeem themselves, and saving Harry is a big step in that direction.
In Harry Potter fanfiction, the Malfoys are often portrayed in a more complex and sometimes positive light. Some fanfictions might explore Draco Malfoy's struggle between his family's beliefs and his own emerging sense of right and wrong. He could be shown as having a change of heart, perhaps influenced by his interactions with Harry and his friends. This gives a new dimension to his character that we don't fully see in the original books.
In the 'Harry adopted by the Malfoys' fanfiction, one possibility is that Harry would receive a very different kind of magical education. The Malfoys might try to mold him into a Slytherin - like wizard, but Harry's own Gryffindor - like courage would constantly be at odds with that. Also, his relationship with Draco could be very complex, ranging from initial rivalry as they are brought up in the same household to a possible understanding and even friendship later on.
Well, in such a fanfiction, Harry might be given a very different education. The Malfoys could try to indoctrinate him with pure - blood supremacist ideas at first. But as he grows, he might rebel against it. He could also be exposed to a different social circle within the wizarding world. Maybe he would have more interactions with other Slytherin families and this would change how he views things like House rivalries. And his relationship with Dumbledore would be very strained as the Malfoys are not on good terms with Dumbledore.
Family bonds can also play a role. If the Malfoys, especially Narcissa, see that Voldemort's actions are endangering Draco, they might turn against the Dark Lord. Their love for their family member can override their loyalty to the Dark side, making them 'good' in the context of the fanfiction.
One interesting aspect could be the exploration of Harry's character development in a completely different family dynamic. In such fanfictions, Harry might grow up with different values influenced by the Malfoy family's pure - blood ideology. For example, he could be more inclined towards Slytherin - like traits, yet still retain some of his inherent Gryffindor courage in a more subdued way.
It could also be a part of a plot by the Malfoys to gain influence. They know Harry is a well - known figure in the wizarding world. By calling him and interacting with him, they might hope to improve their public image or gain some political leverage within the wizarding community.