Welcome to the forum and congrats on the new Telluride! As far as floor mats go you can't go wrong with WeatherTech, I know they have mats for the Telluride. But it might vary based on the brand.
You're not the only one looking for mats on here - https://www.kiatellurideforums.com/threads/looking-for-floor-mats-for-my-telluride.123/
You're not the only one looking for mats on here - https://www.kiatellurideforums.com/threads/looking-for-floor-mats-for-my-telluride.123/