I just started translation last week, but I will recommend mine:
https://www.scribblehub.com/series/56113/okane-o-subete-sekai-e-chikara/
Also known as "Money is Power in any World".
MC is abnormally cunning and shrewd. He isn't a villain, but is far from a hero. He is pragmatic neutral, and sees everyone as "useful, or not".
Most of the main plot is about his schemes and manipulations to climb to the top in another world.
Also, this isn't one of those novels where someone is smart just because, like those super hackers that can bypass anything just for the plot. You are gonna know what he is doing and planning for the most part, so maybe you can connect the dots to his plan before is revealed, or just jaw drop when the time comes. After the first Arc he was compared to Kira from death note, if not smarter, by my Spanish readers.