this seems to happen classic names a lot.
for example
Emily Catherine
Emily Jane
Emily ann
Emily Elizabeth
They sound like they would have been born at any time in history, from the Victorian times to now. There’s no way to pinpoint it .
Whereas Emily Rose sounds very much like a 90s/2000s pairing even though both names are established classics.
Another one would be Sarah Louise, very 70s/80s but Sarah Elizabeth is timeless.
I think people assume that if it’s two classics put together it won’t date but that’s not always the case, the middle name sets the vibe for the first name most of the time even if most people don’t hear it.