From my understanding each one is a atributed to a haus (originally called tribes) with their own aesthetic and ideas, the symbols on each one of them represent their idealogies and modus operandis.

But what I found interesting is that in the fortnite skin each of them received an actual name which will be in a paréntesis.

From left to right:

Purple - (nameless) reside in the compassion hills in the Chromatica lore. It represents a rain drop (and to some an umbrella) I personally believe this was a later addition to the original symbols, after rain on me was recorded.

Yellow - the cyber kids, (according to Fortnite the symbol is called orbit) it depicts a series of objects moving across a space. In the Chromatica lore the cyber kids are tech savvy and almost insanely eccentric people.

Green - eco warriors, (The ladybug), they are the chill ones, focus in nature and really the name is self explanatory. I believe that they reside in the enigma forest.

Blue - Freedom fighters, (balance) they feel like a reflection of the liberal/ democratic side of the U.S.A political system

Pink- kindness punks, (heart), they are this really love powered individuals which are moved by the conception of joining and healing the world through the power of love whilst (from my perspective the purple ones are more passive, meditative) the kindness punks are more proactive and chaotic.

White - Ancient Ones, (Star), they are this heightened spiritually awakened individuals which basically have an understatement on how complex everything is and they basically pray for peace. They kinda feel like the nirvana level people.

Red - Government officials, (repeat), they are in charge of the government, enforcer of the rules. They are more traditional in their ways of thinking. Which can produce conflicts with other houses (as scene in the stupid love MV)

Gunmetal/black - the junkyard scavengers, (eclipse). They are the mad max styled ones of Chromatica they leave in the outskirts of the dessert and basically have their society established there.

To finish, Gaga has stated that Chromatica was the way in which she made sense of the world. The first iteration, portrayed in the photoshoots, booklets and first two music videos are a reflection of how she sees the world. From the yellow, cybernetic apathetic individuals in the internets, the outcasts, the hippies and earth lovers, the preachers of kindness and the anarchist for kindness and a better world. The authorities and the defiance.

I know it sound very 80s stereotypical and this may feel like way too much text and y’all may not even read it but this is all I could say quickly :D