Looking for suggestions, we want something that is room darkening. Doesn't seem like magna shade or similar would do this ?? Yes, I know I said interior as that's too bright in the morning. Our current system in addition to the built in privacy curtain is room darkening curtains held in place by a variety of ways. We're covering driver and passenger sides too.

Magneshade does not do much room darkening and we have the black fabric.

You can find nice shades from Lowes.

Hey, I got the answer ! from the tour of Howard and Linda's new MH. The company that made the shades in their rig makes a variety of interior shades, including room darkening windshield.
It may seem pricey, but looks like a quality of life investment we will make.