I have noticed a couple suppliers posting information on 3D printed 1/48 figures. One firm that I have looked at is a company in Australia by the name of https://www.andianmodels.com/3d-printed-figures. The figures are largely patterned after railroad men of the New South Wales Government Railways (NSWGR). Their attire is easy to visualize these models fitting right in on American railroads. They are starting to offer some of the characters with Amrican style hats.
These figures were painted by a famous modeler, Ian Fainges.
These figures are full of character. They are a little bit expensive to populate a large layout with are perfect a small scene.
Another supplier that I became aware of when Ross Dando sent me a picture or two of some figures finished by Bill Yancey. He purchased some unpainted printed figures from Modelu 3D in the UK.
Bill posed several of these figures next to his RY Models Baldwin S-12.
Bill crafted a modern look by with a reflective tape jacket and a tee shirt with the Soo Line herald.
The poses are interesting and show a great deal of attention to detail. I suspect they may have been created by scanning humans with a 3D laser.
Both companies offer their range of figures in 1:48. You can get the figures custom painted if you lack the skill to do this level of work.
Check these suppliers out. They produce some interesting products.