I don't post that much about Raiders, though it is a genre every bit as interesting as Swords & Sorcery, Superheroes, and Sword & Planet. When designing Raiders one of the challenges was what classes to keep. There were a little over a dozen in the first draft, but it was whittled down to the four basic classes that made up the sort of ideal Raiders adventuring party.
I stumbled across this blog that has been posting some interesting content for Raiders, including a new class: the Martial Artist.
The new Marvel film Shang Chi was much better than the trailers advertised. It would be fun to put some of this action and storytelling into a Raiders campaign.
This class can fit well into pulpy archeological adventures in the early 20th century. At the time from what was considered the "mysterious Orient". Before Bruce Lee martial arts were a little known peculiar fighting style that the West didn't know much about.
This interpretation is more of a sort of specialized Mercenary, a pretty good approach to maintain the simplicity of the Raiders RPG. Check it out: