Been growing Charity mahonia for the last 3-4 years. I find little documentation of its edibility but I’ve eaten it in quantity. It is a seedling cross of M. japonica and M. lomarifolia. Both are edible so i decided to give it a go.
I find Charity to have a nicer, slightly sweeter flavor than our native mahonia I’ve foraged over the years. Not that they are sweet enough to eat out of hand for most. I do, but I like sour fruit.
Another good quality about Charity is it flowers and fruits heavily. Most native plants, you’d be lucky to get a pound but Charity would provide several at maturity.
A pic I took last night: