Prodigy/overpowered: MCs that are the best of the best

After dying and waking up in the body of the dukes daughter, MC is determined to get as much rest as possible. She enrolls at a school and rests as much as she can with all her followers bugging her.
-emotionless MC
-genius MC

After waking up in a world that is not hers, MC is determined to make the best of it by sharing her love of tea with everyone she can.
-tea prodigy MC
-eventual love
-business savvy MC

MC transmigrates into a world where cooking skills are the most important. MC uses her knowledge to prove their worth.
-cooking savvy MC
-protective family

After dying in a fight with a powerful dragon, MC wakes up in a world where there are people know as awakens ones. MC uses his knowledge to become the most powerful awakened one.
-protective and ruthless MC
-powerful

Trained to be an assassin and mercenary, MC gets the chance to return to his family and will do anything to protect them.
-fighting prodigy
-emotionless an cold blooded MC
-protective of family