Do you think FT showed traits of "Birth Order" at all?

I don't know a heck of a lot about birth order traits, but I'd say Alex was right on target for firstborn--very confident, leadership qualities, etc.
Leaving Andy out of it (sorry Andy), I'd say that Mallory displayed youngest child traits--immature at times, requires more attention. Jennifer appeared more mature in ways than Mallory as she got older--confident and self-assured.
All in all, despite their quirks, they were well-adjusted teens

Throught the show, Alex had firstborn traits. During the first season Jennifer seemed like she had the youngest child traits and Mallory had the middle child traits. But then as time went on, Mallory seemed to have more of the youngest child traits and Jennifer was much more mature.

All I know from personal expierence is that it can be hard being
the youngest!