This is a sublist of... more>>

Switch Real Children VS. Fake Children

https://www.novelupdates.com/viewlist/24775/?ft=yes

It deals strictly with real child vs fake child conflict in novels, no quick transmigration

Note: the list is segmented BxG first, then BL, then Yuri

My other lists can be found here https://www.novelupdates.com/user/231781/kawaii12345/
and include

Lost And Found Children

Switch Real Children VS. Fake Children (children coming to terms with being switched)

Fake Children vs Real Children Quick Transmigration
Real Child vs Fake Child Standalone list
Sibling Warfare (when the kids are about to kill each other)
Poisonous Families
Transmigrated into a novel
ACT: Ancient China Transmigration <<less

Where the plot contains MC being switch at birth or at young age with someone. ... more>>

Stories here also include those of similar trope as the CENTER, such as someone being kidnapped/lost/died at a young age and the family took in someone else as a sort of "replacement".
Tier is base on when they are added in this list: with the higher number being the most recently added and 1 the oldest. 

This list is full, starting a new one at: https://www.novelupdates.com/viewlist/83222/ <<less

Transmigrated into a novel. Not Quick Transmigration... more>>

My other lists can be found here https://www.novelupdates.com/user/231781/kawaii12345/
and include
Switch Real Children VS. Fake Children (children coming to terms with being switched)
Fake Children vs Real Children Quick Transmigration
Real Child vs Fake Child Standalone list
Sibling Warfare (when the kids are about to kill each other)
Poisonous Families
Transmigrated into a novel
ACT: Ancient China Transmigration
Great Ancient China Novels Part
Sibling Warfare (when the kids are about to kill each other) <<less

Interaction between children that had their identities stolen/swapped. With an emphasis on family/ family reintegration problems... more>>

Note the list is segmented in terms of number of novels

BxG, Quick Transmigration, BL, Yuri

My other lists can be found here https://www.novelupdates.com/user/231781/kawaii12345/
and include

Lost And Found Children

Switch Real Children VS. Fake Children (children coming to terms with being switched)
Fake Children vs Real Children Quick Transmigration
Real Child vs Fake Child Standalone list
Sibling Warfare (when the kids are about to kill each other)
Poisonous Families
Transmigrated into a novel
ACT: Ancient China Transmigration <<less

Transmigrated to novel theme and Rebirth, worth to read just on my opinion. Not particularly addictive that you want to re-read multiple time just worth... more>> to fill your free time. <<less