GLS, bigger, better, proper middle rear seats. Not much more in price.
It’s the GLS not the GLE you compare with the GV80.

2020 Mercedes-Benz GLS-Class Review, Pricing, and Specs
Like the brand's flagship S-class sedan, the 2020 Mercedes-Benz GLS-class SUV blends a luxurious cabin with refined road manners in an elegant package.