Which US carriers support esim

Hello mtakamoto, 

Welcome to the Apple Support Communities! We see that you're looking to determine what wireless carrier are offering eSIM service. 

Here in the US the carriers which offer eSIM are:

United States

AT&T

T-Mobile USA

Truphone

Ubigi

Verizon Wireless

You can find these links and other carriers worldwide in this article: Find wireless carriers that offer eSIM service. 

You can learn how to use Dual SIM with eSIM: Using Dual SIM with an eSIM. 

All the best.