This page gives the Oracc PUA signs in Oracc PUA section 9.4 which contains glyphs for Proto-Cuneiform (PC) numbers that will probably not be encoded as Unicode codepoints.
See the Oracc PUA page for general notes on the columns in this table. [/osl/OraccCuneiformFonts/OraccPUA/#h_definitionaldatatable].
In addition, this page uses the abbreviations: