I have Weathertech mats in my 2015 Highlander. I am following this discussion to help make the floor mats decision on the 23 Platinum which arrives in December. The Weathertech have been good, but my experience is similar to others on this discussion. Snow/salt spills over the sides because they don't fight tightly on the door-side. My other complaint is that they are difficult to get really clean. The dirt seems to stick to the mat at the top end of the grooves. The other consideration is the cargo mat. With just two center seats, I expect to use the back row for grandkids from time to time. The Weathertech cargo liner is good, but it is one piece and I have to remove it and store it somewhere when I use the rear seats. The Toyota cargo liner is split, meaning I can leave it in if I raise the third-row seats. So far, I've ordered the Toyota cargo mat and am going to try the Toyota all-weather mats that come with the Highlander.
If I decide to change, I really like the look of the TuxMat floor mats that lightfreak showed above. I also like look of the 3D mats, but they don't yet say if they fit the 2023, and when I select 2022, their message says they don't have a mat to fit the Highlander.