This property defines the Unicodes which are Cluster Break between two non-spacing marks or between a non-spacing mark and a base character
Characters like ᅠ,ᅡ,ᅢ, etc. are listed under Vowel Grapheme Cluster Break.
95 Characters are present in Vowel Grapheme Cluster Break starting with the Unicode point U+1160 that represents the character ᅠ.
Currently, as per latest version 15.0.0, Unicode supports 14 number of Grapheme Cluster Break. Here are a few examples - Base,Carriage Return,Control Neutral, etc.