I really liked 'A New Understanding' in the world of Edward Cullen x Jacob Black fanfiction. This story delves deep into their personalities and how they interact. It starts with a tense situation between them but gradually builds towards a more harmonious co - existence, with some really interesting plot twists along the way.
I'm not sure about a specific title, but generally, these fanfictions often play with the idea of their contrasting personalities. Edward is the brooding vampire and Jacob is the passionate werewolf. A good fanfiction would likely explore how they might overcome their differences and find common ground. Maybe in a fanfic where they are forced to protect the same thing, like their tribe or the town, and in the process, their relationship evolves.
One popular plotline could be the two characters initially struggling with the unexpected pregnancy. Jacob, being pregnant, might face challenges within his pack as it goes against the norm. Edward, on the other hand, could be in a dilemma about how to protect Jacob and the unborn child from various threats in their supernatural world. There could also be a plotline where they have to hide the pregnancy from certain factions who might not be accepting of it.
Some werewolf packs that are more traditional might also act as antagonists. They might not accept Jacob's pregnancy as it goes against their beliefs and traditions. They could try to separate Jacob from Edward and force Jacob to deal with the pregnancy in a way that aligns with their pack's values, which could lead to conflict.
You can start by looking on Archive of Our Own (AO3). It has a vast collection of fanfictions, and you can easily search for Edward Cullen x Jacob Black ones. There are also some great works on Fanfiction.net, though the interface is a bit more dated.
There's a fanfiction called 'Shifting Loyalties'. In this one, Edward and Jacob are magically bound together in a way that makes them experience each other's emotions. This leads to a whole new level of understanding between them. They start to see the world from each other's perspective and it changes their relationship completely. It's unique because it doesn't rely on the typical love triangle scenario but rather creates a new bond between them.
One popular storyline could be Renesmee's coming - of - age in the vampire world with Edward as her protective father. She might face challenges in school among humans while hiding her true nature, and Edward would be there to guide her through it. Another could be a time - travel scenario where they go back to a significant moment in vampire history and have to deal with the consequences of changing something. There could also be a story where Renesmee discovers a new power and Edward helps her master it while facing opposition from other vampire clans who fear her power.
In many of these fanfictions, Jacob's character often develops a new sense of vulnerability. For example, in stories where he discovers he's pregnant, he has to deal with physical and emotional changes that he's not used to. Edward, on the other hand, might develop a more protective side. He has to step up and support Jacob, which is different from their previous dynamic.
One popular Edward Cullen fanfiction is 'Wide Awake' which explores an alternate universe where Bella has a different backstory. It's interesting as it delves deeper into her character development outside of the original plot.