If you insist on running models locally on a laptop then a Macbook with as much unified ram as you can afford is the only way to get decent amounts of vram.

But you'll save a ton of money (and time from using more capable hardware) if you treat the laptop as a terminal and either buy a desktop or use cloud hardware to run the models.

A 16GB 3080 is probably the cheapest and most ideal in a big laptop.

But you can get some acceleration with anything ~6GB and up.

It’s about VRAM, I would say the more the better, 4060 with 8GB should be the starting point

I had alienware with 3080 16 GB, while it was nice but the laptop is so buggy with all sorts of problems both hardware and software that I sold it at the end, still happy with my MSI Titan, bigger and heavier but overall better experience.

The GPUs with the most VRAM you can justify spending money on.

Also, what size and ballpark price are you looking for?