Why did the Navajo aid the Pueblo Hopi Ute Paiute Comanche Kiowa and the Apache?

Most of these groups never aided each other. The Ute raided the Navajo for slaves to sell to the Spanish in Santa Fe. The Apache and Navajo are linguistic cousins but did not work together. The Navajo sometimes traded with the Hopi and other Pueblo groups and other times raided and fought with them.

The Navajo assimilated many cultural ideas and practices from the Pueblo peoples and made them their own. The Paiute to this day make ceremonial baskets used by the Navajo. There are seen to be too many cultural taboos to follow to do them right by many Navajo.

The Comanche had a kind of hegemonic empire and didn't cooperate or aid anyone. The Kiowa were a plains people and only would have had much contact with the Navajo except perhaps trading in places like Santa Fe. The Kiowa and Comanche sometimes had an alliance. The Kiowa- Apache ( an offshoot of the Apache) lived near and like the Kiowa but did not speak Kiowa rather used sign to communicate.

In sum, all of these groups lived in somewhat overlapping areas but would not be seen as "aiding" each other at most times.