This is exactly what I do. Wide-mouth jars with plastic screw-on lids stored on the bottom shelf of my lazy susan. Only time it sees sunlight is when I'm scooping some out to drink.
I've never noticed any quality degradation.
I really like clear 8 oz mason jars for overnight oats. It's the type of thing I like to be able to see through! I bought these lids because they are easier to clean & open than the banded metal version for needed for canning
Ball Regular Mouth Jar Storage Caps Set of 8 https://www.amazon.com/dp/B0000BYC4B/ref=cm_sw_r_cp_api_ddAPyb2WY6CKY
This should fix that problem, no?
What if the inlet was the metal lid and the bottom(outlet) was the glass? see any problems with that set up?
I've gotten them on Amazon but I've also seen them in Walmart in the canning aisle!
Do you use the regular metal mason jar lids? I've seen plastic lids for them, wonder if they might be better for repeat use.