Which laptop is best for SIMS 4 game

christiangrimes7​  There are lots of reviews out there, some from professional media outlets.  A few are linked here:

https://www.notebookcheck.net/MSI-Katana-15-B13VEK.715902.0.html

Having said that, almost all gaming laptops have backlit keyboards; this is a question of whether the keys are individually lit so you can get the shifting RGB look you said you wanted.  If you were fine with single-color backlighting (and you could set it to change on some models), you'd have a lot more options, including a few cheaper than either of these.