Haudenosaunee (“People of the Longhouse”) is the autonym by which the Six Nations refer to themselves.[23] While its exact etymology is debated, the term Iroquois is of colonial origin. Some scholars of Native American history consider “Iroquois” a derogatory name adopted from the traditional enemies of the Haudenosaunee.[24] A less common, older autonym for the confederation is Ongweh’onweh, meaning “original people”.[25][26][27]
The Iroquois are the Haudenosaunee. The latter is the more respectful and culturally appropriate term.
https://en.wikipedia.org/wiki/Iroquois
I did not know this before. Thank you!