You could go the O1 route. The Peter Roberts HN posts (the immigration attorney who does work for YC startups) has lots of great info on this area: https://news.ycombinator.com/item?id=27560781
To be honest we sadly don't have any useful advice for US visas: it's not a fun system.
Only thing is it's now more possible than ever to soak up US culture, run a US-focused company, but not be based in the US. But that's not what you wanna hear if you've built your life there. I'm sorry we can't be more helpful