Donald Qualls
Subscriber
Large Format forum has specification charts for lenses. It has the image circle for each lens as well for comparison. That might help you.
https://www.largeformatphotography.info/lenses/
I didn't find an Angulon of any focal length shorter than 120 mm on that chart, nor on the linked one for "older lenses" -- but every other reference I've seen makes it appear the 90 mm f/6.8 Angulon covers 4x5 with no margin, but must be stopped down well to compensate for field curvature.