About standardized variants of characters in Dingbat block

[Yifán Wáng]

Hi,

I'm curious about the reason why U+270C VICTORY HAND ✌ has
standardized text and emoji styles defined but not with U+270A RAISED
FIST ✊ and U+270B RAISED HAND ✋.
http://www.unicode.org/Public/9.0.0/ucd/StandardizedVariants.txt

I personally can't think of their usage disparity, so what is the
rationale behind it?

Thank you.