Im not very familiar with the esri demographics, but I suspect it doesnt carry the raw MHHI for each geography, otherwise you would have found it in the data.
You could just extract the data yourself using the tidycensus package using R. Even if you are new to R, it is a fairly simple process.
Here is a walkthrough:
Chapter 2 An introduction to tidycensus | Analyzing US Census Data
After exporting the data as a shapefile and loading into PRO, you can put a query or adjust symbology as you need.
