Renman
We got noggins for everything that is floating as part of the standard inclusion. Wonder if it's different between different framers or different states.
I'm pretty sure noggins are only needed for wall mounting a TV in a particular spot being key. All the floating cabinetry are screwed onto the wall studs, pretty much the same effect as extra noggins, its just harder to find studs if you don't provision noggins first. But as long as it's over the entire width of the wall, they will find enough studs support the cabinets.