One the Woman

The main characters in both dramas have to act as their doppelganger from super rich-rich family with evil family members. Pretending to be the other person, they also have to take over some big business company. The overall mood and atmosphere of the shows are quite different, though.

One the Woman is literally sister drama of the fiery priest. It's more focused on Lee Hanee's character who is also a prosecutor with similar bluntness and attitude (she played 2 characters there but in this case we're talking about Jo Yeonju).

Besides, Kim Wonhae was also hillarious there despite his character in One The Woman as one of the villain.

I think plot sounds similar only a little

- doppelganger identity switch as original had an accident so fake has to impersonate him
- ML is a prosecutor/lawyer (only original is a prosecutor fake one is a con artist)
- plenty of twists, thriller

- doppelganger identity switch as original gets kidnapped so fake has to impersonate him
- ML is a judge (YH is about identical twins so one is judge other one is a thug)
- plenty of twists, thriller

I think plot sounds similar only a little

- doppelganger identity switch as original has to impersonate his other identical instead of his place
- ML is a cop ( 1st he is a cop but later he had to show others he is the other twin)
- plenty of twists, thriller

- doppelganger identity switch as both are clones and the evil clone impersonate like the other one
- plenty of twists, thriller & every episode will keep you on the edge of what happens next

Similarities

Doppelganger identity but both twins however the other twin have plastic surgery and the other twin has to be an imposter to pose as that twin.

- doppelganger identity switch as both are from time travel and the good/evil impersonate like the other one
- plenty of twists, thriller & every episode will keep you on the edge of what happens next