Hmmm... well, if you like Hunter-like settings, you can't go wrong with works like SSS-Class Suicide Hunter, The Player Hides His Past, and Regressor instructional manual if you want to burst a rib while laughing. Other reads I recommend that have game-like/RPG elements or time-travel shenanigans (they go back in time to become stronger, basically), are Eternally Regressing Knight, Nebula's Civilization, I Became the Tyrant of a Defense Game, and Pick Me Up. For cultivation works, you have Myst, Might, Mayhem, Return of the Flowery Mountain Sect, and Reaper of the Drifting Moon.
The most similar to SL's in terms of plot is Eternally Regressing Knight, and after, SSS-Class Suicide Hunter that takes the same plot but improves it by a 100th. The rest all have their quirks and different characters, but they're all enjoyable. The Heavenly Demon Can’t Live a Normal Life is also a great read if you like to cheer for badass MCs.

I haven’t had so many emotions from just reading, i just finished the novel (615 chapters) and I this is inly place i can release my feelings. I thought solo leveling is peak, even did a tattoo, but this, calling this masterpiece just as “peak” would be such a big understatement. I cried for several days, from happiness, from sadness, from character development, i laughed hard untill the people i lived with thought i am crazy. Last chapters i read for whole day, without eating and drinking, i couldn't stop. Some will say he just OP, there are so many similar other stories, and thats why this one is more special for me. In ocean of same plots, this one exact sorry and character caught my eye and eyes of thousands other people for a reason. I love it, i will definitely commemorate this story as a tattoo as well, not because of cool characters, but because of deep immersion, to the point I could belive Roman really existed out there, somewhere in the countless dimensions.
While you just in the start of that roller coaster that only builds up its hight before drastic fall, please enjoy this ride while you can, enjoy all the characters and treasure them, because time is natural enemy of a human. I read novel on Webtoon, i spent money and i do not regret spending any penny on that, and dont ask me to spoil, unless you are a fool.
Thanks for listening to my heart, i still cant fathom what i read, but as Roman always said, you should always face reality, even if you are miserable before it. May your day be blessed.