That could be any gaming laptop from any manufacturer., those are the only ones who still ship with upgradable RAM and dual M.2 slots.

Finding one with a decent screen for anything other than gaming is the trick. I linked it up there, but this is IPS with 100% sRGB, more brightness than most people need, 16:10 (vertical space is nice!), 165Hz, and matte! Most gaming laptops are...not that. Maybe 50% sRGB on a dim glossy TN screen.

Lenovo Thinkpads? You can absolutely have two m2 slots with a good screen and a solid graphics card. https://psref.lenovo.com/Product/ThinkPad/ThinkPad_P1_Gen_6

I think any midrange gaming laptop in 2023 has that plus much better response times compared to apple laptops

Workstation laptops from Lenovo and Dell have upgradeable RAM and have been offering 128 GB RAM for something like 6 years.