It’s very simple geometry but they have this layer effect where its brighter from the top and a dithering thing. I have 0% knowledge about shaders, rendering, and lighting but I would like to know how to accomplish something like shown in pic.
you would make a shader that takes object or world height into account, depending on the desired effect and then dither in screen space and reduce the colors ~ here it looks like only about 8 shades per object/color. shader graph would make it very easy to do this, but i will always recommend writing your own shaders.