A lot work went into your post. I don’t think however that these “stars” are worth the effort! Nevertheless, my own list would be similar to yours, I’ve heard of Mumford and Sons, for example, but only this week did I learn they are from England and not from Oregon as I had thought. Never heard them though!
Mumford and Sons are probably the best, most talented band of the last 20 + years. What would make you think they were from Oregon, of all places??
Listen to Mumford & Sons. Fantastic. Alternative Folk music. Unbelievably good live. Really great. The rest of that list is mostly crap.