Just found this post, after starting a new White Scout Car request.. apologies.
The Rubicon list is good.
I would put the White Scout Car on the top of the list, with the Horch, WC-51, and Kubel/Schwimmwagens following.
Maybe a CMP Ford, and if you are going to make a 15cwt truck for the Brits, we can get the Morris in resin from a number of suppliers - how about a Bedford MWD instead.?