How much rust to expect?

Spoiler alert - I sold my Suburban so I can buy one just like it with 4WD. So, not a lot to choose from in Houston, but my extended family is all in Nebraska. What should I expect for rust on a 2015 with about 100k miles?

In Houston my tolerance is pretty low, mine didn’t have any that I know of.  I expect there would be some?  

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