I have an old Grohe showerhead that has 2 sprays, one is a straight jet blast, and the other is a foam like a kitchen sink aerator that is accomplished by a screen moving in front of the jets. The shower head is unique as the jet blast is created by square hole nozzles (orifices) with a bar upstream and just slightly off center of the orifice. This creates a bit of an oscillation in the water flow of each jet that increases it's perceived force. It's no gentle shower head with my 90 PSI of water pressure. It is a glorious pressure washer!
It's 30 years old and I've never found anything else like it.