Here are the materials in Bench v. State:
We also find this District Court appropriately applied McGirt to determine that Congress did establish a Cherokee Reservation and no evidence was presented showing that Congress explicitly erased or disestablished the boundaries of the Cherokee Reservation or that the State of Oklahoma had jurisdiction in this matter.Hogner v. State of Oklahoma
Based on the evidence, the District Court concluded that Congress never erased the boundaries and disestablished the Chickasaw Nation Reservation. The Court further concluded that the crimes at issue occurred in Indian Country. We adopt these conclusions.Bosse v. State of Oklahoma
Lower court materials here.