Corsairs are my favorite minor faction by far, and probably third or fourth overall. I have a pretty large collection of Corsair ships (though not as large as Ben’s apparently) but I never pulled one of their named crew sadly.
They specialize in gold running and boarding. Boarding’s pretty underpowered in this game though. Still, they often have really fast ships with deep cargo holds and their ships all look amazing. Also, underrated bit about the Corsairs is since they’re all galleys, you can’t tow them since they’re never derelict.