If you want litrpg that's not focused on the system, you want Dungeon Crawler Carl.  it's not very big on character development, but is as well-written as pick a mainstream novel.  Unfortunately the first book is now Kindle, not Royal Road.

If you want Litrpg that doesn't have a system at all, the daily grind is about a guy who discovers an infinite office inside his real one, with things like living staplers and decision trees that are actually trees.  Much better than it sounds, but the nerdiest thing I have ever read and decidedly an acquired taste.  you wouldn't expect it to involve domesticated computer monsters, living memetic entities, dragon mecas, and the ability to grow gods in a lab from the description, and yet it does.

Neither are finished, neither are exactly heavy on character development.  But both are well enough written that if litrpg were more mainstream they could probably get traditional publishers.  Problem with most litrpg is that it's terribly written, full of typos, etc.  It's very hard to find polished ones.

To list a few more of these: Delve, which has pacing issues but now he's planning to get an airship.  Wake of the Ravager, which has characterization issues but now he's running a kingdom and can use powers gained from sort-of-extradimensional monsters.

And for something incredibly angsty and long, there's always Worth the Candle, which unfortunately seems to have gone on hiatus or something recently but is, like, I guess the Song of Ice and Fire of litrpg or something, in the sense that it takes and subverts every trope of the genre up to and including the main character being heroic in the first place (he tries, but has still managed to kill probably something on the order of 50000 to 100000 people, reading between the lines, and is just generally a fucked up person. Very much the most adult litrpg out there that I've seen, but not in a cheap way).

I wander why didn't anyone recommend the malazan book of the fallen series? or, even better, the wheel of time? I am writing from the phone, so can't write so much with this fucked up keyboard, but I guess people who are into those things know what I'm talking about.

another one you guys might be interested in is also one of my favourites, somewhere in the fifth place, I'm talking about a brave new world by Aldous Huxley. yeah, it's not sf or dark fantesy, instead, it's...dk how to call this kind of books...an eutopia novel? anyway, what I like the most is both the way he layed out the action and built the characters, as well as the more deep and philosophical aspects of the work, like what does that eutopic world really mean at a deeper level? maybe what it appears to, just fiction? maybe, more likely, it can be interpreted as a symbol for the ignorance of most humans, the inability or unwillingness to step and see beyond the safety of their confort zone, waring ignorance like a cloke to hide them from the real world? you see, this book is interesting in more ways than one, that's why it comes just after laundry files in my list.
p.s. Once I finish this message, I'll probably break my screen from frustration, I hate this horid keyboard, I really aught to install gboard, this swiftkey is crap.

I'll tell you why the Fifth Season didn't come up. One reason, and one only. I forgot.
That was an amazing book though, and I'm going to read the second one soon. Add it to my list from my first post in this thread. It's an excellent blend of fantasy and soft sci-fi, with strong characters, a good plot, tight writing and some really excellent philosophical points. An adult book though; if you want to read something that will be all squeamish about sex and gender and the like, you won't find it here. Jemisin just plunks this sort of thing into her fiction with no fuss or fanfare, which is enormously refreshing even though I'm a cis-het white dude.

Tonkee, or whatever her name is, presents as female, but has biologically male sexual equipment. It's just sort of dropped in when Tonkee is washing herself or something. No fanfare, never an issue made of it. It's just something that happens. God, if only.