Just imagine in term of randomness or uniqueness what if we used multiply language or names. Because there are more than 7,100 language spoken in this world and there are 195 country. So if we think of it, in every culture, area, city, country, people use different language different names and the names doesn't have to be meaningful like my username. How much randomness would it create! Not everyone can speak multiply language nor everyone have a good memory in remembering words. People tend to forget. But when I think of it it fills me with nothing but curiosity. That's all I wanted to say.
Of course, due to the widespread of the technology people have submitted different wordlists in different languages which is yet to be reviewed as they're different
famous language already in the wordlists. But for what you want, a
repo, in its infancy, is available for it where you can translate some preliminary word lists (not up to 2048 yet) to a local language. It has its rules, like removal of diacritics words, such that any word with any dots or squiggles attached to it should be written without theml (all word in English character set). Also the words should be levenshtein conscious. Atleast levenshtein distance should be more than 1; words with Levenshtein distance of 3 is perfect. On the contrary, Being aware of the calculation and formulas used in generating seeds; mnemonics, checksums, length of the mnemonic sentece in words. You should know that it's secure enough over choosing words from your brain.