This one compares specs of the Expy against the Tahoe/Suburban, Toyota Sequoia, Nissan Armada, and Chevy Traverse. Expy is definitely king of leg room in the third row.
https://www.autoblog.com/2017/11/10/2018-ford-expedition-comparison-vs-other-big-suvs/
https://www.autoblog.com/2017/11/10/2018-ford-expedition-comparison-vs-other-big-suvs/