This property defines the Unicodes which are Titlecase Letters
Characters like Dž,Lj,Nj, etc. are listed under Titlecase Letter General Category.
31 Characters are present in Titlecase Letter General Category starting with the Unicode point U+01C5 that represents the character Dž.
Currently, as per latest version 15.0.0, Unicode supports 30 number of General Category. Here are a few examples - Close Punctuation,Connector Punctuation,Control Character, etc.