boy with a scar:

What if Neville was the Chosen One, and James and Lily survived?

&

What if Neville was the Chosen One, and James and Lily were tortured by the Lestranges?

the kids who chose themselves:

What if Neville and Harry were both killed as infants, and there was no Chosen One?

no place like home:

What if Petunia refused to take him in, and so Harry was raised in Hogwarts?

the family evans:

What if Petunia had raised Harry like a son?

the heir of something or other:

What if Harry was Sorted Slytherin?

he will have power the dark lord knows not:

What if Harry was a squib?

the girl who lived

What if Harry was a girl? (cis)

the girl who lived (again)

What if Harry was a girl? (trans)

the last son

What if Ron was the Chosen One?

the brightest witch of her age

What if Hermione was the Chosen One?

baby birds and other adventures

What if Harry and Hermione met before Hogwarts?

the family potter

What if the Dursleys died, and Dudley was left on Lily and James's doorstep?

perfectly normal, thank you very much

What if Petunia was the witch and Lily the Muggle?

a life of smoke and silvered glass

What if Severus Snape stayed friends with Lily?

yer a wizard, Dudley

What if Dudley Dursley was a Muggleborn wizard?