The Mandan are often used as a prime example.


The Mandan are arguably one of the most interesting of the Native tribes, in part, because of the persistent belief by some that they are not entirely Native….and haven’t been since before the 1400s in the era we describe as that of “European contact.”

The Mandan today live in North Dakota, along the Missouri River, but historically, they lived in Missouri. They are believed to have migrated from the Ohio River Valley sometime between 700 nd 1300. They were a more settled tribe than most, establishing year round villages and permanent homes.
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https://nativeheritageproject.com/2012/04/29/the-mandan/