Why would you need a specific typeface? Your goal is to get characters displaying to the user rather than tofu. Having said that, the place to look for multisc

Why would you need a specific typeface? Your goal is to get characters displaying to the user rather than tofu. Having said that, the place to look for multiscript support in Helvetica would be Linotype’s Neue Helvetica World: https://www.linotype.com/5553118/neue-helvetica-world-family.html https://www.linotype.com/5553118/neue-helvetica-world-family... . Unfortunately, while they currently support 103 languages, Mongolian isn’t among them. I guess if this restoration takes off it might become part of the next release.