Well hello new member, I am a fellow Californian ready to help you through your gardening adventures.
Since your soil is dg, you would have no problem growing things like papayas and other tropicals, though I would recommend partially amending the soil to hold in the nutrients for any sort of water loving tree that is resistant to root rot. Some varieties of mangoes I would recommend are lemon zest, Maha Chanok, sweet tart, And Pickering. Remember to graft all of these onto Manila seedlings! To get to know what you can grow in your area, I need to know your historical lows and highs in the local area, to make sure that the things you start with are safe or viable in your area. My recommendations for other trees go as following: dragon fruit, passion fruit, longan, Mauritius lychee, jaboticaba, atemoya, white Sapote, among the starter things I would say so myself.