I really like
Laura. I don't find it dated. I see it as a classic. I like how it isn't overly popular these days.
Janet and
Deborah seem dated and on the boring side. They are popular among adults around the age of 60, but they aren't popular for little girls anymore, so they would be unexpected choices. I don't really care for the sound of either of them. On the other hand, I like
Ellen, which gives off a warm, old-fashioned vibe. It seems readier for revival than
Janet and
Deborah.