>>984797 (OP)
CNC furniture is child-level designs that is only suitable for pine wood--that is cheap and shitty and not very durable over the long-term.
If you do this, just use cheap pine wood and be happy if it lasts 5 years.
Assuming you are doing CNC furniture and using pine,,,,,, for the desktop, you could use oak-veneered plywood if you wanted a nicer-than-normal desktop. Using plain pine boards for a table-top will dent and scratch really easily. Or another way I've seen is that you can use floor tiles for the desktop as well--tougher stuff like pergo.
If you want to build furniture that is durable, then you need to use hardwood. No pine or poplar.
And hardwood furniture must be designed with humidity expansion and contraction in mind, or else the furniture will crack and split.
Overall it is much stronger and more durable--but it does cost more to build, and is more trouble.