https://www.cnet.com/news/iphone-xr-vs-iphone-8-plus-what-iphone-should-you-buy-specs-price-comparison-features/

Of the two phones, the iPhone XR has a bigger 6.1-inch display. Despite this however, the XR's slimmer bezels mean that the physical footprint of the phone is actually smaller than the iPhone 8 Plus, and it's lighter as well.

The iPhone 8 series retains the home button.