Fan Casting Gender-Blender Name in Sort by Tropes

Sometimes the only name you get is an ambiguous abbreviation, such as Sam. Or a gender-neutral name, such as Dominique or Claude in French. Or worse, a name whose "default gender" changes from one country/language to another (or even over time in the same country!), like "Andrea" which is typically female in the U.S. and other Anglophone countries, in Spanish-speaking countries, and most European languages but typically male in Italian (in Greek it means "manly"). And let's not forget the names that must be written down to determine the gender, such as Tony/Toni, Adrian/Adrienne or Francis/Frances.