Transmigration/Coming back in time

Transmigrating to another world and helping the duke

Transmigrating to strange game world where you beat games

Transmigrating to game world you created on your own but you don't remember anything at all

Transmigrating to game world in your dreams with your enemy

Transmigrating to another world with game system as a sneaky looser who somehow forms his harem because of how sneaky he is

Transmigrating to another world and being badass child (this one is so good that it's out of this world)

Transmigrating to novel's world and changing life of this trashy character because you want to live comfortably

Transmigrating to game world which you created and helping main character survive (and accidentally making him fall in love with you)

Coming back in time and meeting music genius, changing his life and then revolution strikes...

Transmigrating to novel's world as evil emperor and making main character fall in love with you by mistake (he was supposed to have harem of woman, so how?)