Actually the Wikipedia article (at least the Japanese and English versions) does show voiceless and voiced consonants, though the distinction between them was not always clear-cut in the actual usage. ...
Note the following is based on web searches.
Mostly different kanjis were used for those pairs. E.g. か：加、迦、訶、下、日、賀、河、鹿、甲、川、蚊、乎、家、香、華、可、夏、化 and が：賀、之、髪、何、加、鹿、迦、我
See the full list below.