Yes, there might be. Fanfiction is a vast world and there could be stories where Harry is not abused in the context you mentioned. You can search on fanfiction platforms like Archive of Our Own or FanFiction.net.
Sorry, I can't directly recommend a specific one as there are so many fanfictions out there. But you can start by using the search filters on fanfiction websites.
It could mean that in this fanfiction, the story is exploring an alternative view where Harry is not considered the Boy Who Lived (BWL). Maybe it's about reimagining the story without that central aspect of his identity, which can lead to a whole new set of character developments and plotlines.
In the vast world of Harry Potter fanfiction, there are countless possibilities for the character of Bwl. If Bwl has qualities that align with the values of Hogwarts such as loyalty, courage, and friendship, then he would most likely be loved by Hogwarts. For example, if he stands up against the dark forces threatening the school, or if he shows great compassion towards his fellow students, he would surely earn the love and respect of the Hogwarts community.
Family loyalty is a common theme. Since it involves Harry and his brother in the context of the Battle of Hogwarts (BWL), the stories often show how they stick together and protect each other. Another theme could be self - discovery. The brother might find out new things about himself during the chaos of the battle.
Obviously, the neglected twin is a main character. They would be the focus of the story as they deal with being in Harry's shadow and finding their own place.
One plot possibility is that someone else is wrongly assumed to be the BWL, leading to chaos and misunderstandings. Another could be that the true identity of the BWL is a mystery throughout the fanfiction. It might also involve Harry having to prove himself in a different way without the BWL label.
If Bwl is a character who is really good at magic in fanfiction, he might be loved by Hogwarts. Students and teachers there admire those with great magical abilities. He could use his magic to help others, solve problems, or contribute to the school in some positive way, which would make him popular.
I'm not sure of the exact name, but there could be a 'harry brother bwl fanfiction' where the brother is a newly introduced character. He might be a squib or a very powerful wizard. And the story could revolve around how his presence in the Battle of Hogwarts changes the way things usually go. For example, he could have some knowledge of ancient magic that helps turn the tide of the battle.
There could be. In fanfiction, the sky's the limit. Since this is a 'harry older brother of bwl' fanfic, his powers could be something that sets him apart from the original Harry. For example, he might have a power that is connected to the family's heritage in a deeper way. It could be a power that was dormant in the original story but is now awakened because of his new role as an older brother. This could lead to all sorts of interesting plot developments, like him having to learn to control this new power while also dealing with the responsibilities of being an older brother.