What are some good music artists?

I am looking for artists similar to John Mayer, Jack Johnson and others. I like country and some alternative music. Just not a lot of auto-tune, I don't really like that. I really enjoy just like acoustic music with someone and a guitar. But I'm open to anything. I have been listening to a lot of country lately and I'm looking to branch out but if you know any good country, that would be nice too. Thanksss!!! :)