This property defines approval of Symbols as Unicode in version 12.1 in 2019
Characters like ㋿, etc. are listed under 12.1 Age.
1 Characters are present in 12.1 Age starting with the Unicode point U+32FF that represents the character ㋿.
Currently, as per latest version 15.0.0, Unicode supports 26 number of Age. Here are a few examples - 1.1,10.0,11.0, etc.