Grande Ronde in Oregon. Casino and logging based income (very popular and successful casino). I have been impressed driving through the town every year. Improved roads, hospitals, fire & police, housing development. I noticed the church plays a big role in their lives.
They actually donate to relevant causes outside of their tribal area.
They are an exception for sure.
The Choctaw seem to manage best around here but there are no real reservations, just geographic areas of influence for the various tribes in the state. My tribe, the Cherokee, are most numerous but not standout though better than the Creek and Seminole in management. I take nor ask or expect anything from the tribe but many do.
The Cherokee seem to try to do a lot to self - benefit the tribe having started a medical school and other types of boot strap programs.
The American Indian easily has a substance abuse problem and it is crippling to them. So is lack of meaningful work. A problem growing across America I fear. So many people without meaning, Being needed, usefulness or accomplishment in their lives. Collectively we have low and dwindling means for even self actualization. It will get worse as remaining jobs become ever more few and menial.