You can do this using the 3D projection settings by selecting the the parallel projection, top view option. Cut your plan in 3D and then open 3D projection settings, then select the parallel projection option / top view. You may have to rotate the view to get the orientation you want. Once configured to your liking you can then create a 3D document for notes, dimensions, etc. I like to use this for roof and site plans b/c, as you write: you are getting exactly what the model gives you in a view that can then be formatted, noted, etc. If you look up Jared Banks' tutorials on youtube he has one on configuring 3D document settings for clean looking black and white 3D document views.
Mac OS Monterey
Hardware: M1 Max with 10-core CPU, 32-core GPU, 16-core Neural Engine, 64GB unified memory
1TB SSD storage