This study might help because it breaks down hospitalized patients by comorbidities: https://www.cdc.gov/coronavirus/2019-ncov/hcp/clinical-care/underlyingcondi

This study might help because it breaks down hospitalized patients by comorbidities: https://www.cdc.gov/coronavirus/2019-ncov/hcp/clinical-care/underlyingconditions.html https://www.cdc.gov/coronavirus/2019-ncov/hcp/clinical-care/... of the ~7000 people that died of covid in the study ~1000 had no comorbidities. unfortunately this doesnt break down by vax status, but based on other studies ~90% of hospitalizations are unvaxed. So you can probably get an order of magnitude approximation for your metric. Unfortunately though this isn't the only metric that should be considered because people with no comorbidities can transmit the virus to people with comorbidities, so you really want to take that into account.