Sooo, I just cleared out a 60 cm drawer and filled it twice. The idea was that you get more cabinet yield with the available space without the Rondels or LeMans cabinets.
Since I have the LeMans, as mentioned above, if I left a dead corner, I would only have a 60 cm cabinet available.
Don’t be surprised, one pan is filled with Bolognese from the fridge, but I wouldn’t put anything else in it anyway. In the second picture, three pans share one spot; it doesn't need to be more.
Those are what’s left over
So: if you have space for wider cabinets, you might as well do without the corners. However, if the capacity is limited and, like me, you don’t want to clumsily open a meter of drawer with several kilos every time, the corner variants would be an alternative.
This is probably exactly why they were developed, namely to use every corner space-savingly.
By the way, in my old kitchen, I had all my plates in an 80 cm pull-out cabinet from Ikea: quite cumbersome and hard to open, and the drawer sagged downward.