Best system for 1930s DnD campaign?

Hey guys, I'm looking to DM a 1930s DnD campaign. It's going to be a lot of work reskinning everything and making it work. I'm not married to Dungeons & Dragons, so I was wondering if you had any suggestions on a better existing system for 1930s.

It can have magic or not, sci-fi technology or not. Honestly, I can work with anything that starts be in the 1920s-1940s without having to manually recreate DnD myself.

If it helps, the story will focus on a single city, a criminal mob (and fights with their goons), political corruption, detective work, and some other goofy and fun stuff along the way.

Thanks for anything you guys can suggest!