which drawings you need is up to you and the project.
For example, you can have a skilled millworker whip you up a kitchen with just a verbal description (not that I'd try to do that since I am in the habit of using drawings more for contract purposes than to tell someone how to build it). What I'm getting at is, assess the skill of your builder. If it's you, and you've never built anything before and don't want to be making trips back to the hardware store for replacement materials, draw more, use the drawings for planning and purchasing materials. If you build cabinets for fun and have a pro wood working shop in your garage, two elevations and a section will get you through.
Me, I'm a bit retentive when it comes to planning so I modelled it all in 3d, right down to the framing. I made pattern drawings (dimensioned not actually used as layover patterns) for each piece, and I laid them out on 48x96 sheets so I'd save on material.