If I was laptop shopping for myself, I'd likely review Lenovo for some of their Thinkpad line as I am a FreeBSD user which usually has better support there too and like the keyboard/mouse on them better. As a technician, I've seen plenty of stupid things from Lenovo like structural screws that easily fall out of the bottom panel leading to hinges breaking the laptop and proprietary video drivers that when automatically replaced by Windows updates (and not just Windows 10) leads to a fully dimmed screen until reinstalling the Lenovo released driver again.
I find HP easy to get parts direct from HP for and for a while on many computers with service manuals usually (but check first a snot always) available right from the product webpages which shows how to tear it down and has part
#s. With units that require removing adhesively attached feet and replacing the keyboard requires removing the motherboard among other parts from the palmrest assembly I normally crosos those off the list from any manufacturer.
Dell is often a bit more of a messy journey of hunting for proprietary parts on desktops but the laptop world considers that stuff common anyways. Service manuals rarely easily available on public pages but parts do normally have a Dell part# right on them.
Fujitsu is one of the few companies I've seen do useful things like 1-2 screws to remove an expansion panel door that exposes a removable fan for cleaning/replacement. Can't remember but I think Panasonic Toughbook 'may' be similar but I've seen too few. Toughbooks are generally well built but replacemets and some basic upgrades become too pricey as they find ways to do more things in a proprietary way and the base computing power is usually pretty weak for a top price computer.
MSI higher end laptops seem nearly impossible to get service documentation nor do I know of a good way to do part lookups and once known parts are still usually quite hard to come by for proprietary things like motherboard or a panel of outer casing.
From a hardware design quality/durability alone I would not consider Apple laptops during shopping myself for various things like failing nonreplaceable keyboards (due to defect, not abuse) that will likely need another class action lawsuit to get Apple to try to acknowledge to nonupgradeable anything with hardware that is OSX compatible only and if the motherboard dies due to for example a basic thunderbolt electrical connector issue will lead to complete board failure/shutdown as a response due to no isolation (and a failed board on a modern Apple means hard drive completely inaccessible until repaired.
Personally I require a removable battery as they will fail and swelling is a common defect/age failure to see. Internal batteries normally do not have room allocated to swell without putting excessive stress on casing and components though some have pinhole ability to disconnect an internal at least for when 'remove power' is a required step to fix unusual glitches. I require the computer to also have a way to open for maintenance as blowing out the cooling system from the outside isn't good enough long term. I prefer upgradeable hard drive and RAM instead of being soldered to the motherboard and prefer an optical drive though an external can usually suffice for my needs anymore.
If wanting a higher power laptop for CPU and/or GPU then some look into desktop replacements; Clevo/Sager has units which go as far as offering desktop Intel processors and GPU on a removable card. You just hit expensive+large+heavy computers at that point and removable doesn't mean upgradeable as a BIOS update likely required for different generation CPU and GPU of a different generation may need electrical modification despite using the same plug in socket for its card. You also would want to make sure you get the computer from a supplier that sets you up on a route to have Prema BIOS as a choice. Now you have a computer with clock speeds like 4.4+GHz from a socketed CPU (normally laptops are lower speeds like 2.xGHz last I looked, fewer cores, no easy delidding to fix crappy Intel compounds, and modern AMD+Intel chips are not all defect free coming out of the factory) on a leading desktop CPU and a powerful but weaker than equivalent sounding desktop GPU in a size where cooling can be provided to run the components like that.
Not sure of any AMD option for a removable CPU or Prema type of BIOS quality but I'd expand my shopping to hunt that out at least for consideration in the current market of chips. If your mulitimedia software has any decent designs to it, it should benefit nicely from higher core count CPUs.
When you open system section of event viewer and see "WHEA hardware error"s on "PCI Express Root HUB" and you can try/check that you updated BIOS, drivers, OS and are not overclocked then you need to send your laptop to the manufacturer as there is a defect such as CPU not receiving a high enough voltage. Motherboard or CPU defect on nonsocketed hardware is fixed by replacing the combination hardware as a whole. and that error state is far too common and connected to laptops with often some of the more strange errors that you should never have to experience whether rare or frequent.
For graphics work you want an IPS panel for better color representation htough I find lightbleed issues on the edges much more common for those in laptops. Of course review the physical design for things like extra short right shift key, placement of slashes and other symbols, is there pause and scroll lock keys (Dell=no usually). New laptop should have at least 1 USB-C port. I prefer the power button not be on the side of the case where I will bump it while holding/toching the side to move the computer a bit or even bump while connecting an accessory to a side port. Once that sillyness is straightened out you can modify Windows settings to stop treating the power button as the sleep button.
If you review desired programs, you can see what is required by them (look at recommended as a minimum and ignore actual minimum requirements unless trying to stretch the use of an existing underpowered machine to this purpose with bad experience expected). Multimedia usually wants hardware to throw at the problem so you should have not been shopping for the 'cute' small laptops. If you want a good experience and don't need portability then I recommend a desktop anyway.