As I was building my pirates, I picked up a number of solos I liked (mini-wise) and painted them up. Of those, I selected Rutger Shaw because he is a 'Jack Marshall and can command one of my non-Rhulic 'jacks.
The other is Orin Midwinter who is a rogue inquisitor and has the ability to shut down enemy spell casting. However, he is the only miniature (with Magnus) who will not work for Cygnar.
The third one is the Ragman, some type of undead horrorthat goes well with Fiona the black as he too is a Thamarite. See my post on Fiona and Magnus.