Nothing to do with front V's rear shafts.
The yokes when aligned as in the attachment are in phase. Any out of phase of the yokes will cause small in/out movement of the shaft as the universals rotate. This is a 2-piece shaft but you get the idea.
However a lot of manufacturers do run out of phase shafts to try to reduce inherent propshaft vibration due to design faults.
The most common fault is non-parallel drive flanges and I'd guess this could be an issue with the old fashioned beam axle on Patrols.
Commodores (from VN on with live axle) ran out of phase prop shaft but they still always vibrate when taking off. You can play with the phase angle but all you'll do is move that vibration to a different RPM.
Once you go to an independent axle, no more problems.