I'm generally interested in some kind of statistics that are broken down into groups that are based on a type of work or education rather than just the level of education. I'm curious about similarities and differences between different countries in politics.
I couldn't find an exact equivalent, as it seems that the few countries that I looked at use different categories for the analysis, however, nothing as narrow as profession.
For instance, I found this YouGov analysis for the UK from 2017, which looks at class. In Germany, they tend to group the professions by worker, employee, office worker, and freelancer.(See this article from 2019) As to the Bulgarian general elections in April this year, there is only separation by employment status.