Samsung UHD 8 series. I got one about a month ago to replace a 10 yr old LG. Noticeably better picture, UI, features. Has a setting to auto-optimize for gaming too.

If you aren’t picky about brands and want to scrutinize specs online for a few minutes you could probably find something comparable for a better price, but this is a solid tv that does everything you should expect a tv to do these days. Use it as a baseline. If you can spend more and want to future-proof a bit, look into 8k vs OLED, but you might want to wait until the industry picks a standard. Don’t bother with QLED.

LED is the light source for an LCD screen. Anything touting its LCD screen in 2021 is not likely to be optimized for modern gaming.