Gaming laptops

ndnvtd8at77z  This is the same Lenovo Legion Slim, except with an RTX 4070 and a terabyte of storage:

https://www.coolblue.nl/en/product/948984/lenovo-legion-slim-5-16arp9-83ex0027mh.html

This one has a brighter screen, with the same high resolution, and is a good quality laptop as well:

https://www.coolblue.nl/en/product/922149/asus-rog-zephyrus-g16-gu603vi-n4015w.html

If you want a very pretty screen—no brighter, no more pixels, but even better colors—this one is essentially the same model laptop (one generation newer, but the same idea) except with an OLED panel:

https://www.coolblue.nl/en/product/943420/asus-rog-zephyrus-oled-g16-gu605mi-qr038w.html

And again, all of these are wildly excessive for Sims 4, as is the first one I linked.  It's of course your choice whether you want an overpowered laptop; I just want to reiterate that to be totally clear.  You wondered about the processor, but all of these can more than keep up with the graphics card, which would be the limiting factor if Sims 4 didn't have its own limitations.

Graphics power is significantly more expensive than CPU power, at least in this class of computer.  So laptop manufacturers will always pair a GPU with a processor that can match and exceed its capabilities, since no one wants to spend a lot of money on a GPU only to have it held back by the other hardware.  Sims 4 is also not particularly demanding on the processor, at least not by modern standards.