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Which Oceti Sakowin bands are part of the Dakota group?

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A Cheyenne River Sioux dancer in colorful traditional regalia performs during the Grand Entry at a powwow, with an American flag and other participants in the background. — Oceti Sakowin A member of the Cheyenne River Sioux Tribe performing during the Grand Entry at the Cheyenne River Sioux Tribe Fair Rodeo and Powwow, Eagle Butte, South Dakota, September 4, 2016.

Within the Oceti Sakowin alliance, the Dakota group—also known as the Isanti or Eastern Dakota—is comprised of the following four bands:

Mdewakanton1
Wahpeton1
Wahpekute1
Sisseton1

These groups are distinguished by their specific variant of the Siouan languages family. While the Nakota (Yankton and Yanktonai) may sometimes identify as Dakota, they are categorized separately within the broader alliance structure.1