https://www.cnet.com/news/iphone-xs-versus-iphone-xs-max-versus-iphone-xr-whats-the-difference/

The iPhone XS, iPhone XS Max and iPhone XR are now fully revealed by Apple, and all of those announcements flew by fast. With the iPhone X now out of the Apple Store, your iPhone X choices for the next year boil down to one of these phones (though you could still get the iPhone 8 and 8 Plus, or the iPhone 7).

All three new iPhones for 2018 share most of the same core features, but it pays to know how they're different, and not just their price. (See chart below for pricing and specs.)