I thought it was the taurus which was the domestic car sales leader back then. And only because they sold so many to rental fleets. Also, the prices of ******* and tauruses were never astronomical, just average or even a bit below for their class after dealer discounts. List prices were average for their class.
As far as actual vehicle sales, the Ford F150 was far more popular than even the class leading accord and camry, as well as escort and taurus.