Thanks again for all the answers
For me, the main problem with the random sims is the texture. Sims with more realistic skins look far too different (and better, IMO) than Sims with the default textures, so even as normies they just look low quality. I'll see how they look when I use KrazyKris tip on default textures, though, which I didn't even know about.
Ah! I gotcha! I'm sorry, that was a slip on my part as I was assuming you had the CC but was looking for the base sims to "paint" them with so to speak.
Well, as I've said before, it's about taste, mainly, but some defaults I use is
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's eyes (personally I use EyesN15, which is the link given, but she have a lot others), along with defaults for the aliens and vampires on her blog. The skin I use is
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Are We Electric, though it may not be the popular choice, considering both in that it's not ultra realistic (I tend to enjoy the pseudorealism more), nor does it really cater to nudity (there are nipples and areola, though), but Wildguys details and even
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's penis details can help you out in that aspect (it's not default, so manual placement only) the LunarisEclipse's link is to the outdated penis by the original creator to nab just the details (penis is broken), a remade WW selector compatible version is found
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(people are saying it's giving trouble, but it's working golden in my game, the texture is so great, I don't even
need penis detail... but I'm still gonna). For body presets, I love
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presets the best, but
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preset is pretty good, too, I tend to mix-match for "pieces". Though since WW updated with a body selector, I keep
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's Better Bodies as default, just so I can have it in my collection, though it's pretty finicky with feet replacements (I've seen gaps in the ankles if you don't use the full set), but I haven't seen problems with mix-matching anything else.
Not gonna lie, I'm lacking a good male body presets and that's disappointing me, I'm going to have to do a hard search on that one.
I've also have a plethora of skin overlays that aren't defaults, so I'll leave you to search for those to finesse for your own taste, a quick google search of "skin overlays" and "anatomically correct skin" with sims 4 attached to it should pop up a lot of options, majority includes nudie bits, but most creators let you know if they don't.
Hair/makeup/clothing is on a whole other ballpark as there's no real way to default it, it's exactly as KrazyKris explained, I must stress, make sure you edit them in Sims 4 Studio to disallow the more "unconventional" CC for random, because Sims 4 random is more on the clinically insane side, and the game will latch onto the most odd-ball CC, and use the same one repeatedly for every NPC with no rhyme or reason.
From me to you, I don't let random NPCs touch any of my CC, the Sims 4 doesn't know how to control itself.