Chinese: https://www.w3.org/TR/clreq/
Ethiopic: https://www.w3.org/TR/elreq/
Arabic: https://www.w3.org/TR/alreq/
Tibetan: https://www.w3.org/TR/tlreq/
Korean: https://www.w3.org/TR/klreq/
Indic: https://www.w3.org/TR/ilreq/
Tamil: https://www.w3.org/TR/ilreq-taml/
Japanese was the first in the series, but the rest is equally fascinating (even if the documents may be somewhat less mature)