Take a look to this website:
https://pcpartpicker.com/products/laptop/You can filter laptops with different settings.
The most important thing on a GPU is the clockspeed, but it can be misleading because not all MHz all equals. It depends on the number of cores (stream processor for AMD or CUDA core for Nvidia), the gen, etc. Better look at real world benchmarks to see the true performance of a GPU (just google "[GPU name] benchmark [game name]")
For the games you mentioned, maybe an integrated GPU from a modern CPU could be enough, but I'm not sure. Someone with better knowledge could tell you.