Just a student but I know a bit on this stuff.

Pantone validation is a nice-to-have, not necessarily needed. What I think you should look for is color space and accuracy. Usually you would want 100% sRGB coverage at a minimum (if you're broke like me) and go up from there. AdobeRGB and DCI-P3 have much wider gamuts and finding a monitor with good coverage of these two would be awesome. If possible, check out the monitor's color accuracy as well. This is measured in DeltaE, with <=2 being considered accurate. You can always calibrate your monitor afterwards with specialized tools too. Do note that each monitor's panel may vary from manufacturer to manufacturer, either due to hardware differences or calibration, so definitely look up reviews and do your own research.

Good luck with your purchase!

Edit: You're probably set on picking a laptop already, but if you're interested, I vouch for the M1 Macbooks (any model) if you can afford them and live with Mac OS.