I’ve had an Apple XR clear case for about 9 months, still no yellowing that I can see. But to be honest it’s my least favorite case I’ve ever owned. Fingerprint magnet, almost impossible to remove as its on so tight, feels like your going to break the phone removing it. Here’s a pic of it against white paper so you can see the coloring.
Thanks for the pic!
Sounds like the lucid clear from Caudabe is the way to go. That’s not as tight and still great quality.