Get regular Skype lessons with Kegan from https://www.bohemianvocalstudio.com. He also has YouTube videos up so you can get a taste for what he focuses on first. Don't worry if he doesn't sing in the exact style you want, because it's all about foundational principles. It's life-changing stuff.

If that won't work for you and you're set on in-person lessons, try to find someone who was never a natural singer, and had to learn everything from scratch. They'll be able to pass on more than someone who started with a basic natural ability.