If I had to make the list tomorrow, I'd say Growth, Production, Learning, Construction, and Commerce (not sure about combining them - I think long-term I could see the economic picks put in the Statecraft category and just steer the fluff towards interstellar trade).
What is in the Construction category? Presumably there would need to be more than just things that improve the construction meter... Most other things that I'd call "construction" would fit under Production.
Since the whole point was to make things easy to find, I'd suggest renaming a few categories for clarity of scope (a few options for each, to indicate the ambiguity, to suggest new names):
"Growth" -> "Farming & Growth" or "Farming & Health" (equivalent) or "Farming & Life Sciences" (allowing for later insertion of bio-warfare)
"Production" -> "Industry & Resources" or "Production & Resourses" (if "Industry" is not meant to be the primary kind of production, and "Mining" not the primary way to get resources)
"Learning" -> "Research" or "Information & Research" (If including "data processing", or in order to facilitate inclusion of sensors in future)
And to remove what I consider to be a bad implied bias,
"Commerce" -> "Economics"
Not all economic systems involve commerce within their own closed society. IMO this would also be a more reasonable name for a category that includes "construction" stuff, if "construction" means infrastructure.
I'd also request / suggest putting "Trade" with "Economics" to give "Economics & Trade". I can see the logic in putting trade in a "Sociology" or "Statecraft" category, but IMO "Trade" is more relevant to Economic (or Commercial) aspects of the game than diplomatic or social ones. And regarding putting Economics / Commerece / Trade / Statecraft / Diplomacy / Sociology all in the same category, IMO that's too much for one category, and Economics / Trade are of sufficient importance to warrant their own category.
IMO, for this discussion to be concluded effectively, deciding what should be in the categories is more important than the actual names chosen... However the names should specifically and unambiguously indicate what is and isn't in the categories, and not sound awkward or weird (which is obviously an opinion / taste issue).