WoW is still based on an ancient game engine, so the absolute first priority with any machine you want to run it on is the best CPU your budget allows.
Next major items are RAM & storage; if you want to play smoothly, you’ll need an SSD and - ideally - 8-16GB RAM, you will notice a difference w/ 16GB, but 8GB is the absolute minimum that Win10 & WoW ‘need’ to play nicely.
Lastly, graphics… you don’t need a 20-series nVidia card, unless you play other games that are graphics heavy or play at 2560x1440 or higher resolutions.
Also of note; a laptop isn’t an optimal platform to play WoW on, if for no other reasons that battery life will be poor & heat will ramp up heavily.
Another potentially sub-optimal factor can be wireless connections - at least consider a hard-wired connection for smoother gaming.
Even with recently released kit, none of it is ‘must have’ to play WoW happily, if you want to play WoW with all the pretties, then maybe some of it will help, but 12-month old kit is still perfectly servicable.
Have fun with your builds/machines…