Exactly.
In my family it seems like it was oldest to youngest. At least that’s how it looks based on the family pictures. The oldest two (boy and girl) have dozens of pictures of themselves as infants and toddlers. By the time they got to me (#4) I was able to claim a snapshot of me in coveralls playing on a slide for my “baby” picture. I think the last two (#5 & #6) had even fewer pics.