Mine had Schuko with adapter

... was supplied with a Swiss plug.

Mine also had a CH plug, no adapter...it says so in the description from Galaxus.

Mine has a Swiss plug, and the new model is already available, so I would even consider it.

Mine had a Swiss plug.

Mine had a Swiss plug with three poles.

Cannot be answered in general. Depends on whether the appliance was purchased from BSH Switzerland or whether it is an import from Germany. BSH Switzerland is the Bosch company that equips the appliances for CH entdprechend.
Only the reseller can answer where the machine comes from.