Husky Liners makes 1st/2nd row for the Telly. On their selector, check 2020 model year because they'll be the same fit.
The OEM mats are awesome. Perfect fit, hooks onto the floor hooks/tabs, the thickness and material are exactly right, almost like they had the dimensions for the car back in the day. It's true that the OEM all weathers don't have the "over the center hump" design like the
WeatherTech's and if you absolutely need that, then go for it. I might even get just the 2nd row WT mat if I start having passengers/kids/dogs in the 2nd row, but for now, I'm perfectly happy with the OEMs.
The one thing that bugs me about the
WeatherTech mats is their logo and website advertised in their colors on the driver's mat. The OEM all weather mats just have the Telluride label stamped in, with no coloration or website listed. Looks classier in my opinion. Also, the lip on WeatherTechs are great for maximum protection on the sides, but they do ride up a bit high and can snag things. I haven't seen this on the Telluride but for previous cars and friends' cars, I've seen the WT lips migrate a bit over the years leaving a small gap that can catch or snag shoes, etc. Your mileage may vary.
My ideal hybrid solution would be OEM's for the driver/passenger first row, WT one-piece over the hump 2nd row mats, and leave the OEMs for the 3rd row since I barely use it. If I needed full coverage, maybe WT for the 3rd row too. I'm still trying to figure out if I'm doing a DIY quick-release mounting system for a custom center console between the 2nd row Captain's Chairs. Might be too much trouble and maybe my future dog will enjoy the space between chairs. So much to consider. Sorry for this long post