>names like Sylvia, Lisa, Karen, Sharon, etc. might take quite a few generations before they come back into fashion.
Sylvia, Lisa, Karen, Sharon might make a comeback but not Karen due to the recent negative connotation and has been considered to be a pejorative term [1].
Similarly most of the Jesus disciples names become common place, the name Judas is avoided like a plague, since it's considered to be a pejorative term equivalent to traitor based on what he did to Jesus.
Sylvia, Lisa, Karen, Sharon might make a comeback but not Karen due to the recent negative connotation and has been considered to be a pejorative term [1].
Similarly most of the Jesus disciples names become common place, the name Judas is avoided like a plague, since it's considered to be a pejorative term equivalent to traitor based on what he did to Jesus.
[1] Karen (slang):
https://en.wikipedia.org/wiki/Karen_(slang)