Not quite what you asked for,but here's what I did.
I transferred my land line to iPlum, and used that for all US business. (banks, bills, parents) It rang through to my local number mobile phone through their app. Now it's my US mobile number, which I moved to Google Fi 6 months before we returned. (It has to be activated in the US. We were home for Christmas) We had excellent service with Fi in Ireland, with no difference in price.