I managed - with some posing and filing - to position the zombies on their bases in a manner I felt was appropriate. The Waitress and Butcher wound up on the tile floors, while the other three - which I dubbed The Sheriff, Loverboy and The Biker - were placed on 'outdoor' bases.
Group shots of the zombies, front and back:
The Sheriff:
The Waitress:
The Butcher:
Loverboy:
(The Biker's close-up was a little too blurry to be useful.)