Of all the philosophers, sartre is the one youd expect to be into bdsm anyways.
(Yes foucault was def into it, marquis de sade too if you count him as a philosopher)
Now that I think about it i’m sure MANY were
Edit: just checked and yeeeep sartre wrote some stuff in being and nothingness. Also found like atleast 20 major philosophers who’ve atleast written about it.