After I Cut Ties and Stopped Chasing Them, They All Begged for Forgiveness

Stories Where the Protagonist Is Tortured Into Madness, Then Takes Vicious Revenge

It absolutely has to have no romance.

Her Older Brother Was Horribly Abused in His Previous Life, So the Family Is Reborn and Dotes on Him This Time

The Protagonist Was Switched at Birth but Becomes a Big Shot Through Their Own Hard Work

The protagonist was switched at birth and, after growing up, meets a fake young master or young lady who bullies them, unaware that the protagonist has an extraordinary identity. After reuniting with their birth parents, the protagonist becomes the apple of everyone’s eye.

Two Male Leads: Switched at Birth, Abused, and Rejected by Their Family Even After Being Found

Looking for books like "After the Universally Hated One Became Critically Ill, the Male God Finally Regained His Sight." The more heartbreaking, the better.

The Younger Brother Was Adopted. When the Original Owner Returned, She Was Kicked Out, and Her Older Sister Regretted It in the End

Looking for books like "Two Years Left to Live, Seven Sisters Beg Me for Forgiveness".

Any Stories Where the Family Favors Their Adopted Child, the Protagonist Cuts Ties and Starts From Scratch?

I'm looking for books similar to After Cutting Ties, My Whole Family Begged Me to Forgive Them! Ideally, it should use some official-sounding language so I can show off.