I have mine set up with a bunch of categories that are sorted with a prepended 3-digit number. Allows me to have different sections of category without it getting mixed up. ex:

010 S
011 A+
012 A
013 A-
014 B+
etc...
350 plz play soon
355 wont play
...
800 dont remember buying this

I don’t think this can really be answered until after the fact. Anything that I (and I suspect most) people could say about an artstyle are going to be particular to an instance of that artsyle. If I’d give advice as someone who is neither an artist nor a game designer, what attracts me more than anything is a unique artstyle, which, if I’m gonna give a brutal opinion, starting from a vague category like ‘pixel’, ‘hand drawn’ or ‘3D’ probably won’t get you there.

I feel like I even struggle to answer your question at face value because it doesn’t align well at all with how I conceptualize game art. For example, Cruelty Squad is a game that I don’t think I’d have gotten if not for it’s artsyle. Like, sure, it’s 3D, but it’s a lot more like a PilotRedSun animation than it is a game like TF2. Or take a game like Factorio: most of the assets of that game are pre-rendered 3D sprites, so despite being artisticly unique in a way that interests me it doesn’t fit into the categories you’ve asked about. The best I can say is “I dunno”, and I don’t think anyone else can answer it further than that.

It’s a setting you can change. The default is a “quick generation” mode which looks as similar to the world seed/settings as it can without taking the performance hit of actually generating it. But it can either be changed to generate the chunks genuinely out to the render distance (which would be lag hell for 128 chunks) or to only render already generated chunks (like you suspect). Only the latter works in multiplayer though.