A experiment was conducted in California (SEED) where 125 adults were given $500 extra per month on a prepaid for credit card on top of their incomes for 2 years and this money was tracked and categorized.

At the end of the experiments it found that Full time employment rose among the adults (28% --> 40%)

The expenditures on the credit cards were categorized as shown below:
Food: 36.92%

Sales/Merchandise: 22.70% (the report notes some of this likely includes food from big-box/wholesale stores)

Utilities: 11.34%

Auto care: 8.77%

Services: 6.90%

Transportation: 3.45%

Medical: 3.06%

Insurance: 3.28%

Self-care/recreation: 2.09%

Education: 0.83%

Donations: 0.65%

Tobacco & alcohol: < 1%

https://static1.squarespace.com/static/6039d612b17d055cac14070f/t/6050294a1212aa40fdaf773a/1615866187890/SEED_Preliminary%2BAnalysis-SEEDs%2BFirst%2BYear_Final%2BReport_Individual%2BPages%2B.pdf