I had no idea there were so many.
BTW, thanks to intercepted radio chatter in English, the Japanese knew that the code talkers were speaking in Navaho. They even tracked down two Navaho POW’s in the Philippines and tortured them, but the prisoners could not make sense of the double-cosing, e.g. referring to airplanes as burds, etc.
The United States Army used Indian code talkers in WWI and continued to use them in WWII in the Pacific, North Africa, and Europe.
The Army tends to be matter of fact about it’s military history though and is not constantly seeking publicity, so it doesn’t play up everything.
The United States Army and Marine Corps also used white and negro radio operators since the invention of the radio and codes, there are freepers that were (and I assume are currently) combat radio operators.