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."
"Harry's had it with his destined role after the Order does something he can't forgive. Now he's done with both sides of the war and wants to be left alone. But since when have his wishes ever counted for anything?"
2. The Art of Hidden Personas: https://www.fanfiction.net/s/5675879/1/The-Art-of-Hidden-Personas
"Harry grows up relying on only himself until his adoption, when he is taught the manners and politics of high pureblood circles. Masking his dark intelligence at Hogwarts & intending to escape notice, past secrets and Dark Lords force his hidden hand."
3. Our Dark Saviour: https://www.fanfiction.net/s/9155949/1/Our-Dark-Saviour
"Harry is abandoned by the Dursley's at the age of 4. Growing up in an orphanage, full of children who hate him was the thing that made Harry snap. When he arrives at Hogwarts, he is clearly not as golden as people thought he would be. Harry hates Dumbledore and so goes to Voldemort, who knows more about him than Harry had thought..."
4. Blood Matters: https://www.fanfiction.net/s/8095859/1/Blood-Matters
"When Dark Secrets come to Light, Harry is forced to re-examine everything he thought previously and learns that blood does matter. Warning for Dumbledore, Molly. Ginny, Hermione and Ron bashing."
"Sequel to ISttD! Harry enters 4th year and must deal with the Tournament and losing Marvolo to Voldemort. Will the newly risen Dark Lord accept Harry or will he still see Harry as an enemy?"
6. Schooled: https://www.fanfiction.net/s/7899682/1/Schooled
"7th Year Gryffs learn why it is never a good idea to piss off their favorite victim, shy Ravenclaw Hadrian Morgan. The orphan's payback during Professor Slytherin's class is BEAUTIFUL & piques the interest & libido of the Lord Marvolo Slytherin, who courts him with the aid of most of the School. But just how naive is Hadrian Morgan, really?"
"Everyone said Harry was different, but what if the differences were more than just surviving the killing curse? What if Harry had Autism? How would the wizarding world react and adapt to The Boy Who Lived?"
2. Saving Hogwarts: https://www.fanfiction.net/s/8291380/1/Saving-Hogwarts
"What would happen if Albus' dies suddenly, after Voldemort is gone for good? What would happen if the castle rejected his choice and made its own decision? Well, perhaps Hogwarts might be fixed."
3. Burnt: https://www.fanfiction.net/s/6855183/1/Burnt
"A disabled Harry comes to Hogwarts story. Everyone expects him to be like his dad, but how can he be with such a different past? A Slytherin Harry takes on Hogwarts in an unusual way."
"While flying back from Godric's Hollow, Hagrid accidentally drops baby Harry over a wild forest. Harry is raised by rebel fairies until his Hogwarts letter arrives. The Dark Lord is in for a surprise... HP/LV romance."
5. Wandering Animagus: https://www.fanfiction.net/s/6201939/1/Wandering-Animagus
"The Dark Side bring back a puppy instead of Potter, so now what will they do?" Animagus, HP/LV fic
6. Unforgivable Sirius: https://www.fanfiction.net/s/7574783/1/Unforgivable-Sirius
"Sirius does something to Harry that he shouldnt and he shatters the poor boy's last hope of finally having a family. He's lost and hurt and terrfied with no one to turn to. No one but the man who has made his life miserable anyway he could. How can Snape help Harry,when he hates him himself; or does he?" Abuse fic.
7. Alphas: https://www.fanfiction.net/s/4951454/1/Alphas
"Harry is not who everyone thinks him to be, but no one really is though - One night he meets someone who wont change the course of his destiny, but definitely how fast he'll get there. Harry/Fenrir, MPreg"
8. Serpentine: https://www.fanfiction.net/s/4993162/1/Serpentine
"Harry Potter was abandoned by his relatives the day they found him. He's raised on the streets and taught to distrust all adults. It's going to be a very different person than Dumbledore was expecting who shows up at Hogwarts..."
9. Rise of the Drackens: https://www.fanfiction.net/s/8022667/1/The-Rise-of-the-Drackens
"Harry comes into a very unexpected inheritance. He is a creature both rare and beautiful and now he must avoid detection at all costs, whilst choosing his life partners and dealing with impending pregnancy at sixteen. What's a boy to do?"