I've been messing about in Blender, making a bunch of variants of 15mm Opel Maultiers.
The two on the right are ambulances, one closed up and the other with the back doors open and the steps down. Third from the right is an office/radio body. The others are fairly self-explanatory I think.
They're based on Bergman's Maultier model. I've just refined it a bit and added some stuff that I already had lying around in my design folders.
And here's another one, reusing some seated German infantry I originally put together as passengers for a SdKfz 7.
I had to put them through 3d Builder's Simplify operation to get the STL down to a reasonable size, but it imposed no real visible penalty, while dropping the file size from 95MB to about 11.
I did a test print of the ambulance variant with the open back doors and steps down. Taking into account my inexperience with resin printing in general, it printed okay, so I don't foresee any issues with any of the others either.
The STLs can be downloaded via my page on Thingiverse at
https://www.thingiverse.com/mojobob/designs.