It looks like there might be a way for U.S. buyers to obtain an EV incentives on the CX-90 PHEV after all. Apparently leasing the vehicle instead of buying it might allow the incentives to apply.
www.caranddriver.com

Leasing an EV Is a Workaround That Could Get You That Tax Credit
Buyers can get federal tax credits for EV models not on the list allowed by the Inflation Reduction Act—if they lease them.