The Mahabarata describes chariot flags of the heroes, which presumably the author thought were at least something like his contemporaries.
From my scribbled notes standards include;
Hanuman the monkey-god
Garuda the mythic bird
night blue banner
'fine emblazoned flags'
a water gourd
scarlet elephant,
sun and stars on azure blue
one with moons, animals and lovely flowers
scarlet bull
boar on silver
bright flowers
stars
eagles
comet
oriflamme with palmyra emblem
'bright-hued banners'
jeweled elephant
black deerskin standard with water vessel
gigantic silver lion with blue eyes
golden moon device with planets circling it
vulture
golden furrow
Other detail includes;
freshly painted chariots adorned with flowers,
white parasols, one in gold
bunches of herbs tied to chariot to ward off evil
chariot draped with tiger skins,
Regards
David F Brown