On the ICAO Aeronautical Charts 1:500000 or V500 Charts, mountian passes are shown with the symbol and height in ft.There they are called "pass" or "mountain pass" in the legend, e.g. on maps of Germany or Austria.
I would expect to find them on all other ICAO maps as well.
Usually, but not always, the name is also given.

Since these passes are very important for flight planning and execution, could you please show them on the charts.