Not to mention the aranea ("Holiday in the Sun") and the weresharks and vulpines (
Creatures of Freeport). In fact, IIRC, just about the only kind of shapeshifter that hasn't been featured in Freeport is the doppleganger! Perhaps the latter, with their ability to read thoughts--which would allow them to detect some of the other shapeshifters they come across--wisely steer clear of Freeport and choose safer cities to infiltrate...
...but on the other hand, you could make a real head-bender (to use polite language) of an adventure out of a shadow war between the shapeshifting species in the city, as they compete for key positions to infiltrate in Freeport society--and in each other's cabals.
