The rate savings is so tiny on a 15 v 30 I’d just get the 30.

My last mortgage I rate shopped on Zillow and then used Sebonic which had the lowest rate.

Boxhomeloans.com is a useful site that gives rate quotes without email/phone/registration. Lets you play with assumptions easily.

They have good not great rates, but a great website for comparing different types of mortgages quickly without hassle.