Unpressurized jets

During the propeller era that was the standard. Later in the war some high-altitude fighters, recons and bombers got pressurized cockpits. Was always troublesome with piston engines.

I’m looking for unpressurized jets. One I can tell off the top of my head is the Yak-36MU and Yak-38U. Anybody else more?

Just think what such a plane did to the ears of the pilots. You don’t want to go upupup fast in such a plane, I guess.