Morina's Family Crest?

[dto]

I recently read Action Comics #371, which had a flashback of Kara Zor-El's childhood days in Argo City.  Kara's best friend Morina died from (anti-)kryptonite poisoning when she tried to fetch her Frisbee-like zoomron from a tear in the lead shielding.  Tragically, Kara's very first rescue attempt (she looks no older than 4), was a failure -- even though she later repressed this painful memory, one wonders if this incident influenced her later career as Supergirl.

What struck me was Morina's purple dress, which sported a black triangle inside a gold triangle.  See this page for a picture: 

https://www.supermanthroughtheages.com/articles/space-colors/?part=10

I've SEEN that design before -- a black triangle inside a gold triangle on a purple field.  But who else wore this?  Can you identify other Kryptonians who displayed this crest?  Maybe we can identify Morina's family.

Many thanks!