Yes, there are quite a few. You can check out some popular fanfiction websites. Some stories might focus on their relationship development during the events of 'New Moon', exploring the emotional connection between Bella and Jacob.
One common theme is the exploration of a different kind of love. Since in the original Twilight story, Bella's relationship with Edward was the main focus. In these fanfics, when Bella picks Jacob, it's about a more earthly and warm love compared to the rather otherworldly love with Edward.
Fanfiction.net is a great place to start. It has a large collection of 'Twilight' - related fanfictions, including ones focused on Bella and Jacob in 'New Moon'.
Sure. 'Bella Picks Jacob' fanfics can be found on various fanfic platforms. One popular one might be on Fanfiction.net. You can search for it using the tags related to 'Twilight' (since Bella and Jacob are from the Twilight series), 'Bella Picks Jacob' and filter the results according to your preferences like the rating, length of the story etc.
Sure. There might be some new characters created specifically for this fanfiction. Maybe a wise elder in the werewolf community who gives advice to Jacob about how to handle the situation with Bella and the pregnancy. Or perhaps a human friend of Bella's who discovers the truth and has to deal with the shock of the supernatural world.
Bella herself might struggle with her identity. She has been so caught up in the vampire world before, and now being with Jacob, a werewolf, she has to redefine who she is and where she belongs. She may also worry about how her human family and friends will react to her being with a werewolf.
A dominant Jacob is usually in touch with his alpha side. This means he has a natural leadership quality. He can command respect from others in the fanfiction world. And when it comes to Bella, this leadership translates into him guiding their relationship in a way that he believes is best for both of them. He may be more confident and self - assured, which can be both appealing and a source of conflict in the relationship with Bella.
One character could be Seth Clearwater. As a member of Jacob's pack, he could play an important role in their married life. Maybe he helps them out in times of trouble or is like a younger brother figure to their family.
It would become more intense and complex. Jacob would be very protective, his werewolf instincts kicking in fully. He'd be constantly worried about Bella and the baby's safety.