Examples: List of Hindu sportspeople, List of Catholic businesspersons, List of Libertarian celebrities, List of Jewish publishers
Lists like this should have general backing for the relationship purported in the title.
The question of what relevance, if any, the relationship has cannot be answered by original research (such as suggesting a lack of, or over-representation of, some group in some occupation/area). There must be a reasonable amount of solid, mainstream articles, books, or documentaries specifically addressing the issue of a connection between the intersectees and showing how that relationship is manifested, for it to have some notability as an intersection. The existence of the intersection outside of Wikipedia is not proof enough that it is a notable intersection.
Examples: List of Europeans, List of African-Americans
When a list is prone to having many listees that can never have an article written about them, or that simply fail notability, the list can usually be deemed as over-extensive and should be renamed, and split into more specific sublists if over-extensive and unmaintainably large. Wikipedia is not paper but it is bytes. The examples above might be more manageable and useful as List of notable French scientists, etc., and List of notable African-American actors, etc.