I personally would go with an HP or Dell.
The HP Envy x360 Ryzen 2500U laptop I got was $699 for 1080 IPS and... a very, very, very good service manual. http://h10032.www1.hp.com/ctg/Manual/c06001791 (EDIT: linked the wrong laptop a few times... this is the one I got)
HP's and Dell's stuff usually have manuals of this caliber. As such, I usually buy a cheap HP or Dell and then service some upgrades myself (replace the hard drive, get an NVMe, upgrade the RAM, etc. etc.)
HP has been pushing "pen" compute, so it has a capacitive touch-screen and active digitizer, for anyone who likes Microsoft OneNote. Microsoft created the new universal pen standard, so its now possible to mix-and-match stylus across different laptops now (at least... any stylus that follows the universal pen protocol). Its still a relatively new protocol, but I got a Wacom active-stylus working with my HP laptop, so I'm pretty happy.
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Its more expensive than what I listed, but I'm personally willing to pay a bit more for slightly better quality than the bottom-tier stuff. The only real downside to the HP Envy x360 is the terrible 6-bit screen: yeah its IPS but its got subpar brightness and poor color accuracy. Good enough for my purposes, but any artist will want to spend on a more accurate color-calibrated laptop screen.
But yeah, just visit a store (Best Buy, Fry's, Microcenter), pick a Dell or HP you like the screen / keyboard / touchpad of... double-check online to ensure that the service manual has all the features you expect (M.2 slot, SATA, etc. etc.)... and just buy the bog-standard mass-production model there and then. Order a few parts online (new M.2 SSD) and you'll be set.