Yes, there are quite a few out there. You can start by looking on popular fanfiction websites like Archive of Our Own or Fanfiction.net. Just search for the key phrase 'harry is elijah's son' and you'll find a variety of stories with different takes on this interesting concept.
One possible plot could be that Harry discovers his true parentage as Elijah's son later in life. This revelation would turn his world upside down and he'd have to re - evaluate his place in the wizarding world.
Yes, there might be. Fanfiction websites are filled with all sorts of creative and often dark or dramatic stories. You could try searching on major fanfiction platforms like Archive of Our Own or FanFiction.net. Just type in the relevant keywords and see what comes up.
It could be revenge. Maybe Bella has some sort of vendetta against the Mikealson family. Perhaps they did something to her or someone she loves in the past, and she sees the daughter as a way to get back at them.
Well, a fanfiction about Finn Mikealson and an OC (Original Character) as mates is quite interesting. It often involves creating a unique story within the world of the Mikealson family. Usually, the writer has to develop the OC's personality, backstory, and how they come to be the mate of Finn. It can be a story full of drama, love, and supernatural elements.
Well, one possibility is that Bella's unique human nature attracts a Mikealson. Maybe her strong will, like in the original Twilight series, catches the eye of a Mikealson who is used to more submissive or less complex beings. They could start off as enemies, with the Mikealson initially seeing Bella as just another human to toy with, but then gradually fall for her unique charm.
Well, it depends on how popular the idea is within the fanfiction community. Some fanfic authors might be exploring this unique concept of Bella Swan being Bellathena Mikealson. You could also try joining relevant fan groups on social media platforms and ask for recommendations. There might be some hidden gems that haven't been widely discovered yet.
The appeal lies in the ability to create something new within a well - known universe. We get to see Finn in a different light with an original character. It's like adding a fresh color to an already detailed painting.
One possible plotline could be Bella Swan, now as Bellathena Mikealson, having to navigate the complex vampire - werewolf politics in a different way. Maybe she uses her new identity to bring about a truce between the two groups.