Sources:

Net domestic migration rate per 1,000 inhabitants
https://en.wikipedia.org/wiki/List_of_U.S._states_and_territories_by_net_migration

Affordability:
https://www.usnews.com/news/best-states/rankings/opportunity/affordability

Jobs:
https://www.usnews.com/news/best-states/rankings/economy

Crime: averaged these two
https://www.statista.com/statistics/232575/property-crime-rate-in-the-us-by-state/
https://www.cdc.gov/nchs/pressroom/sosmap/homicide_mortality/homicide.htm

Health: accessibility and quality of healthcare and public health measures like obesity, smoking, suicide, etc.
https://www.usnews.com/news/best-states/rankings/health-care

Education: adults with degrees, average college tuition and fees, and average debt load of college graduates, percentage of children enrolled in preschool, rates of high school graduation, readiness for college, etc.
https://www.usnews.com/news/best-states/rankings/education



These metrics are weighted half compared to the above:

Outdoors: protected public lands, state institutional support for outdoor recreation, proportion of workforce employed in outdoor recreation, number of national recreational trails
https://www.inmyarea.com/moving/most-outdoor-friendly-states

Family: share of families with young children, share of children who live near a park or playground, pediatricians per capita, quality of public schools, daycare services, childcare costs, divorce rate, etc.
https://wallethub.com/edu/best-states-to-raise-a-family/31065

Fun: number of attractions, ideal weather, restaurants, amusement parks, movie theaters, arcades, shoreline mileage, skiing facilities, scenic byways, state fairs, beer and wine price, music festivals, casinos, etc.
https://wallethub.com/edu/most-fun-states/34665

Governance: unemployment, pension funding, GDP growth, poverty rate, credit rating
https://247wallst.com/special-report/2021/02/12/best-and-worst-run-states-in-america-a-survey-of-all-50-3/