Neville could be a likely candidate. He had the courage and the connection to the prophecy as well.
Hermione might be another possibility. She's extremely intelligent and powerful in her own right. In a story where Harry isn't the chosen one, her knowledge and skills could make her a strong contender for the role. She could use her vast knowledge of magic to take on the Dark forces.
There could also be an entirely new character introduced in the fanfiction. Maybe a long - lost descendant of a powerful wizarding family who has been in hiding all this time and now emerges as the one who has the power to defeat Voldemort.
Yes, there are such fanfictions. You can find them on various fanfiction websites.
Neville is a likely candidate. He has always been brave and has a strong connection to the Gryffindor values. If not for Harry, Neville could have easily stepped into the role of the main character. His growth throughout the series shows that he has the potential to be a great hero.
It could lead to a completely different magical adventure. Neville might face challenges differently and his character development could take a unique path.
Harry Potter himself is obviously still very popular as the main character. His growth and development as the Chosen One are often central to these fanfictions.
One idea could be that it explores the power dynamics within the wizarding world without Harry as the chosen one. Maybe other characters step up and new alliances are formed.
Perhaps in this fanfiction, Draco Malfoy has a change of heart and is revealed to be the one who can truly end the dark reign. He might be in a unique position to infiltrate the Death Eaters due to his family's connections, and then use that knowledge to turn the tables on Voldemort. His Slytherin cunning could be used for good in this alternative scenario.
One interesting plot could be that Harry discovers new, hidden magical abilities that are not mentioned in the original books. This could give him an edge in fighting the Dark Arts and change the course of his battles.
One interesting 'Harry Potter Chosen One' fanfiction could be 'The Chosen One's New Path'. In this fic, Harry discovers a hidden magic that changes his approach to fighting Voldemort. Another is 'Chosen One Redefined' where the concept of the Chosen One is explored in a different magical culture within the wizarding world. And there's also 'Beyond the Chosen One' which focuses on Harry's life after defeating Voldemort and how he redefines his role in the wizarding community.
Obviously, Harry Potter himself is a crucial character. He is the one 'chosen by death' and the whole story likely revolves around his experiences and growth. Hermione Granger would also be important. Her intelligence and research skills would be valuable in helping Harry understand his new situation. She might be the one to dig up ancient texts and lore about being chosen by death. Ron Weasley too, as Harry's best friend, would be there to support Harry, even if he doesn't fully understand what's going on at first.
There could be new original characters created specifically for this fanfiction. They might be mentors or allies to Harry in his journey. For example, a powerful and mysterious wizard who helps Harry understand the true nature of his being chosen.