Honestly not planning anything crazy either. And thankfully I do know how to use command line so it doesn’t have to be 100% newbie friendly, the reason those two are my top choices is due to the included nvidea drivers. Mint was on my mind too, but from what I read it is better suited for older hardware, whereas I am using a decently modern system (Ryzen 7 3700x & RTX 3060 Ti).
If I may ask, from a user standpoint, how easy was it to switch from GNOME to KDE on Pop! and what were your problems with GNOME in the first place? Browsing both choices, it looks like both are very customizable, and those plugin options for GNOME look pretty neat. I am aware that GNOME does use more resources, but given my system specs it’s not my biggest concern.