A free* pixel font for Latin, Chinese, Korean, Japanese, Cherokee, Runic, Cyrillic, and other character sets. · By Poppy Works
Is there a text document somewhere containing all existing and supported characters to date?
Unity's Text Mesh Pro imports such a file to generate the font atlas containing the supported characters.
Please refer to this document
That's a list of the supported unicode blocks = unusable with Unity, hence my question, which still remains unanswered.
Please use this guide to select all of the supported characters you wish to use.