Efficient way to draw geometry in Rhino/Grasshopper

Welcome @eugene_s to the community.

This post is useful. Either you can create zone from masses or from surfaces. In both cases, you can specify zone names. This is easy when the number of zones is small. But becomes a challenge when hundreds of zones are involved.

Yes. That is why Honeybee lives in grasshopper

Import them in Rhino. Create surfaces. extrude surface, cap polysurfaces.
You can also create a workflow to do this in grasshopper.