Below is a list of fanfics that I've read from across the years and highly recommend.
"After the Final Battle, Snape awakes from a coma to a world in which Voldemort is gone, defeated by Harry Potter. Deciding he has nothing more to live for, he tries to end his life, but things don't quite work out the way he planned."
2. https://www.fanfiction.net/s/6323959/1/The-Days-of-a-Flower (Baby Harry)
"Whoever thought that he, Severus Snape would be the perfect man to raise a child, was sick in the head and needed to locked up and his brain removed and used for potions as punishment for even thinking of such a stupid thing...Lily thinks otherwise."
3. https://www.fanfiction.net/s/2270096/1/Nappies-and-Naked-Dancing (Baby Harry)
"The Weasley twins mess up; big time and there to prove it, is a baby. A baby called Harry Potter. Sit back, kick your feet up, relax and read through the ensuing chaos that the prank has caused."
"Harry has a twin, everyone thinks it was Nick who survived. Harry is pushed aside, when it comes to it what will happen? will Harry fight for a world that didn't want him or care about him? will Dumbledore, the Potter's grovell at his feet? Snarry/slash. What happens when the world finds out he was the one to survive that faithful halloween night? oh so many years ago?"
2. Family Bonds: https://www.fanfiction.net/s/7724057/1/Family-Bonds
"When, after that fateful Halloween night, the wrong Potter twin is hailed the Boy Who Lived, how will Harry's life turn out? With a power he knows not, an ancient prophecy and one Severus Snape practically raising him, interesting at least is a given."
3. Unsung Hero: https://www.fanfiction.net/s/2900438/1/Unsung-Hero
"There are two things to know about Harry Potter. One: He kicks ass. Two: No one cares. Why? Because Daniel Potter is the Boy Who Lived."