OLED and QD-OLED monitors are currently the best, followed by Mini-LED, IPS, VA, and TN panels. Look at brightness, contrast, ...
Granted, mini-LED doesn't look as good as OLED, and you still have to deal with the drawbacks of IPS or VA, but it comes at a significantly lower price. Burn-in isn't an issue, so it'll last you ...
Whether it's LCD, OLED, mini-LED, or plain ol' CRT, he's had his eyeballs on them all and has personally checked out all of the best gaming monitors on this list.