anyone know of a simple way to report the following on an attribute table?
Example:
through model builder with a field iterator calling
Summary Statistics (Analysis)—ArcGIS Pro | Documentation with the "count" option
obviously, only for fields of Text type
Iterate Fields (ModelBuilder)—ArcGIS Pro | Documentation
Or if you want other statistics for interval/ratio data type fields, you could accommodate that as well
Echoing the comment above from Dan that the Summary Statistics tool would probably be a good starting point.
The graphic on the documentation's help page shows a visual example of how it'd work for your table.
The tool will output a table, containing each unique value in the field and the count of how many times this value occurs.
Alternatively, if you wanted to give Python a go a workflow along the lines of the following might be suitable:
There is a built in python module called "collections" and within this the "counter" class can be used to count the occurrences of items in a list or iterable.