Kaiser-Frazer's Styling Department had a Kaiser Studio that worked on Kaiser cars and a Frazer Studio which became the Henry J Studio after the 1951 model year Frazer buildout. There ws also an Advanced Studio. Each Studio was a team of designers, clay modelers, draftsmen, etc. As the automotive picture began to fade the styling activities were combined and the number of resource people were cut and the remains shared.
The Henry J got a lot of attention in 1950-1951. Once production of the car as per the government mandates went into production, the stylists were free to expand on the platform because the cost constraints of the government were no longer applicable. Dick Langworth had access to more of the styling clay photos, etc, than I do so I suggest you check out LAST ONSLAUGHT ON DETROIT (published 1975) for a range of photos. Same for Kaiser, although I have a number of pictures showing work done by Brooks Stevens & Associates staf people on the Kaiser and Frazer cars.