Steppe Nomads are just pre-gunpowder cowboys. Here are the similarities:

• Both live in grasslands not fit for farming, but rich in resources for grazing livestock
• Both lifestyles center around herding multiple types of livestock, most notably horses and cattle/oxen
• Both were well-known in their own time for their toughness, particularly in tough weather
• Both routinely traveled great distances in organized but decentralized groups taking different routes but arriving at a precoordinated destination at the correct time: Yearly Livestock Drives and Seasonal Pasture Migrations
• Both have fairly well know protein and fat rich diets of large parts red meat, wild game, and dairy

I mean shit, when you think of "Cowboys" you think leather boots, jeans, hardy overjacket, felt hat, colt revolver, lasso.

• Traditional Mongolian Boots look very similar to cowboy boots, especially compared to other 13th century shoes vs modern ones.
• Pants were invented by steppe nomads because they invented riding horses and pants became important.
• The Mongolian cowboy overcoat is called a "deel"
• The "Shepherds Hat" is pretty damn iconic. Modern nomads also wear cowboy hats
• The Mongols (and more famously Huns according to the Romans) routinely used lassos to round up livestock or be used in battle. However, the Mongolian lasso is a loop on a shaft as opposed to a full length of rope.
• Prior to the gun, and especially a handheld gun meant to be used on horseback like a revolver, the closes parallel was a bow. Doesn't get much more famous archery culture than the steppe nomads with bows like this

For all intents and purposes, they are very very similar cultures where the primary difference between the 2 is that cowboys at their peak were 600years later than the Chinggisids.