Racism in the US south against black people looks different than racism in the midwest/Western states against Native Americans because the goals of the racism were different.

The govt wanted to grow the black population so they could have a huge workforce to take from. Explicit racism helps a lot with this, because it's declaring people black and enforcing that they are less than and deserve to be a lower class. This is probably what you mean about how racist the south is.

For Native Americans, the govt's goal is to take their land and destroy their claims to land - they want LESS Native Americans. That's why colorblindness is the racism in the midwest and west. That is also why those areas HATE Latino people, even though those people are generally just Native Americans who speak Spanish. That's why you hear stuff like "We speak English here." That's why old John Wayne movies were the way they were. That's why we had those Native American re-education schools. That's why we killed so mamy buffalo (to starve them) and the Great Plains to this day has never recovered fully from how many millions of herd animals were killed. It's why, TO THIS DAY, Christian organizations will adopt Native kids to explicitly white Christian families. It's why the Mormons are in Utah. It's why most Native reservations are in extremely inhospitable places (look at the Navajo lands versus nearby in Hatch, NM - the Native people would have lived near Hatch, near water, but we took that from them and gave them barren soil - to kill them).

The racism against Native Americans is like smothering and starving a baby to death, whereas the racism in the south is more like screaming//beating at a baby to depression/"submission".

Rec reading: Conquest: Sexual Violence and American Indian Genocide by Smith, Andrea

Old cowboys used to cut Native women's labia off and put it on their saddle horns to play with. The west is racist too.