What cultures are underrepresented in the world of roleplaying games?

>north africa/sahara. Bedouin nomads, Timbuktu, Moroccan bazaars, strange ruins under the sand dunes...
>inca, south america. Cities in the cloud-covered mountains, ritualized human sacrifice, jungles in the lowlands filled with fearsome tribes, alpacas everywhere
>inuit. Or lapp, or other arctic cultures. SNOW, ICE, COLD. Lots of wildernessy stuff, nomadic, nights that last for months, aurora borealis.
>biblical-style holy land. Roman occupiers, prophecies and false-messiahs everywhere, monotheism in conflict with pagan gods, warring tribes who all think each other are heretics.

Planar culture.

modern culture. aka social media posting, selfies, and shitposting. In addition to anxiety and the search for meaning in a more obtrusive and complex world.

Out of those only inuits are something I haven't seen anywhere. Also would argue that mayaincatec isn't rare at all.

's fair. They're less 'never seen' and more 'kinda rare'.
That said, everybody goes aztec with their south american cultures - the inca were actually pretty different.

>the inca were actually pretty different

Tell me about it, Kuzco.

The Incas had to deal with Lich kings and -nobles that controlled increasingly larger parts of the realm through their mediums while the Aztecs apparently were in the process of dealing with their paramilitary merchant-class' success undermining the mandatory military service ideal their society was constructed around.

>mage the ascension

Mage the Ascension has social media posting, selfies, and shitposting?

Pretty sure it could easily include those, yes. But most wod games set in the present day could.