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I'd look at the wheel and linkage attaching points of the door opening stop linkage.
Check the bottom of the door where the sill plate may be brushing against it. If you see scuff marks on the sill plate, get a mirror and try to see if there is similar scuffing on the bottom of the door. You may want to get new sill plates.
I’ve discover the internals of the door that might be causing some chirping. Stuck the phone into the door cavity and noticed this spring and it’s carrier could be rubbing when you open your door as it uses the door check arm to stay position when open. The spring moves to absorb shock and provide a little pressure on the check arm. A light lube might help? It’s a touch blurry but you’ll see the mechanics behind it’s use
These doors were always an issue. Bowing and twisting where the hinge adjustments just don't add up to the geometry of the door. On the doors I've worked with the chirping is usually the spring moving or the wheel binding a bit. Lube and use may solve it. I assume you have lubed the hinge pins.
