I really don't get the idea of gaming laptops. I guess if you want something like a SFF PC with a screen and keyboard when you move frequently and want to set up a full system for work and gaming instead of having a full tower PC it kinda makes sense, but they're so impractical as a laptop.
The ones that are worth a shit, so the ones with a powerful dedicated GPU and a powerful CPU, will be those 18 inch, 2.6kg bricks requiring a high power charger to be plugged in at all times since running demanding workloads on those components will drain the battery in a second. It's massive and heavy to be able to cool those high performance parts, so you're not gonna be hauling it around in your backpack. Maybe if you go full autismo and get one of those massive hiking backpacks with support straps, but still, it's not really a laptop when it's so big, heavy and power hungry that you only carry it to set it up on a desk.
IMO if you already have a powerful rig at home, all you realistically need for a laptop is a 14-inch, sub-2kg laptop with an AMD APU. It has enough performance for all the standard desktop tasks, realistically the iGPU will be more than enough for your average use case outside the house and it will be able to run older games, the battery life will be much better, it's slightly larger than an A4 notebook and even if it's not a sub-1kg ultrabook it's still decently light. Plus, with everything using USB-C nowadays, you can get something like a 100W charger, and it'll be enough to charge your laptop and your phone simultaneously as well as charge your laptop from a powerbank as those smaller laptops need 45W/65W to charge and not 100W.
Do you really need your entire home PC to fit in your backpack? Or do you just need a middle ground between your home PC and a smartphone?