We have both sides covered here, DD1 loves Lindsey and Jess I thik because she is more of a tomboy, ie soccer, tennis, and just plain YUK things as her sister always says. I also think DD1 loves Jess due to the history aspects, when we were in Chicago last year I had to DRAG her from the Egyptian Exhibit and she is eagerly awaiting our visit this year for the Tut exhibit so that may draw her to Jess.
DD2 on the other hand loves all these dolls but tends to lean to Marisol and Kailey because she has been dancing since she was 4. She just thought Kailey was "too cute" but DD2 is my girly girl for sure, she evens hates to get sand from the beach on herself. She is most at home in the art studio or at the ballet barre or reading a book. She will dress and change doll clothing for HOURS.
For me - it just means more good reasons to buy ALL the dolls!!