I get six base cabinet's sides from one 4'x8' if the cabinets are with loose toekicks or four sides with "normal" cabinets. Anyway, if there are 3 or more cabinets in cutting list pretty much the yield is same for both styles, i.e. all of the board's space get used very efficiently.
That being said, most of the cabinets I make have all the parts (except the backs) made from the same material, so nailers, stretchers and drawer fronts usually fill remaining areas of boards till only narrow stripes (mostly less than 2") are left.
Used to do "normal" cabinets in the beginning and than switched to leg levelers and detachable toekicks and I'm not going back, unless I'm sometimes forced to.
But I am a one man shop and switching to different material for different parts of the cabinets creates waste of time and energy that is, in my case, more expensive than waste of material (like when I cut nailers from the same colored melamine board that I use for doors).
But, your volume and your production setup may yield different results.
I cut my parts manually, and recently I have discovered that I'm much faster in cutting when I nest similar parts on the same board, because alignment is better and many parts "share" one same rip or cross cut. Of course, the yield is not as good as when everything is mixed all over the place, but for the size of my typical project I spend maybe one or two boards more than necessary, but save 1-2 hours in time, which is the price I gladly pay, because two board costs ~ $60-80, and I can make $400 dollars worth of cabinetry in 2 hours, so to try to save on material at the expense of time would be stupid in my case.
On the other hand, if you're cutting your parts on the cnc, this is probably irrelevant to you :)