John's answer is the correct one about race, and this answer makes no attempt to address the biology.
However, to address why you only get those options in you questionnaires, it is because you are apparently in, or applying for jobs in, the USA, as that is really the only country that might be interested in Alaskan Natives and Hawaiians.
There are reasons beyond race for such questions.
These groups are the ones specifically addressed in the law that was passed by executive order on the 25th of June 2021 in the USA, and are also ones included in things like Census questionnaires. You can read the full text of the executive order here. The order is titled
Executive Order on Diversity, Equity, Inclusion, and Accessibility in the Federal Workforce
and begins:
By the authority vested in me as President by the Constitution and the laws of the United States of America, including sections 1104, 3301, and 3302 of title 5, United States Code, and in order to strengthen the Federal workforce by promoting diversity, equity, inclusion, and accessibility, it is hereby ordered as follows:
The definitions section mentions the groups (note the similarity to your list), including whole groups whom you definitely couldn't term races. You should also note the wording - it specifically does not ask about race, rather about communities (emphasis in quote is mine), so this isn't a "race" driven question you are seeing in your applications, as you noted, but perhaps not realized, when you inquired about Hawaiian in the question:
In the context of the Federal workforce, this term includes individuals who belong to communities of color, such as Black and African American, Hispanic and Latino, Native American, Alaska Native and Indigenous, Asian American, Native Hawaiian and Pacific Islander, Middle Eastern, and North African persons. It also includes individuals who belong to communities that face discrimination based on sex, sexual orientation, and gender identity (including lesbian, gay, bisexual, transgender, queer, gender non-conforming, and non-binary (LGBTQ+) persons); persons who face discrimination based on pregnancy or pregnancy-related conditions; parents; and caregivers. It also includes individuals who belong to communities that face discrimination based on their religion or disability; first-generation professionals or first-generation college students; individuals with limited English proficiency; immigrants; individuals who belong to communities that may face employment barriers based on older age or former incarceration; persons who live in rural areas; veterans and military spouses; and persons otherwise adversely affected by persistent poverty, discrimination, or inequality. Individuals may belong to more than one underserved community and face intersecting barriers.
Now, I am aware that this is titled for the "Federal Workplace" meaning that you might think it only applies to those organizations that are federal. In fact, I believe that this would apply to any organization that has federal funding, which includes a huge range of organizations, any of whom can get federal grants - all would need to comply with this law. This includes private businesses, research organizations, hospitals, charities; in fact just about any employer you can think of.