This is an article from Business Insider, which is fairly basic and includes data collected from a brand/company on necessary income to rent an apartment in various popular cities across the world. The article explains what factors the data is based on and rudimentary reference to other considerations. Such a basic data project would be really effective if it was developed, for more involved stories around zoning and real cost of living and rising homelessness.
https://www.businessinsider.com/salary-rent-apartment-major-cities-2019-1?r=US&IR=T