Hi there,
I am using a variety of 30mm figures for my 1737 Austro-Ottoman war armies Pandours?Grenze/Croat/Bosnian militia. There is not a lot to differentiate them. From what I see on t'web, the Pandour pictures are the same as the Grenze figure, but usually depicted wearing the cloak rather than having it slung over the shoulder.
Try a Google inmate search on 'austrian pandours' to see what I mean.
I would agree on the irregular nature, though. Perhaps you could add putty cloaks to some, add muskets to command figures for others, and mix in some Russian 7YW Pandour figures?