"Speculative philosophy" is the study of a philosophy professing to be founded upon intuitive or a priori insight and especially insight into the nature of the Absolute or Divine broadly : a philosophy of the transcendent or one lacking empirical bases.
What is the meaning of speculative philosophy? , How does a speculative approach in philosophy help teachers? , What are the differences and similarities between speculative .. are a few themes of "Speculative philosophy".
Some reasons we look at "Speculative philosophy" include philosophy is speculative as if seeks to answer questions that have no solution, like, why we are here, the meaning and purpose of life, do we live in a computer simulation etc.
John J. Stuhr, Michael Sullivan are a few specialists of "Speculative philosophy".