YC is totally a non starter for non US aspirants and it's not YC's fault. Best case scenario - you end up having a company that's registered in US, would be paying taxes in US when it comes to that but you yourself wouldn't be allowed to set foot on the US soil, and even if that, would be shuttling for visa renewals every now and then.
YC has apparently been helping many founders get the O-1 visa. And there are plenty of services that allow you to manage US companies remotely.
Those having such kind of distinction would already have going too good for them (unless they're just good on the paper) that it wouldn't make much economic sense for them to relocate elsewhere.