It seems there are 19 codes: https://www.naics.com/search-naics-codes-by-industry/. I'm interested in more granularity e.g. where "mobile video editing software" appears on the map, show me the market size, top companies, estimated sales, etc.
"Mobile video editing software" is a product type, not a business type. If you want product categories, you need a different data source. Such as Amazon's, or Google's or Alibaba's product tree. Here's Google's product hierarchy.[2] Google category 4953 is "Software > Computer Software > Multimedia & Design Software > Video Editing Software".
If you want such results handed to you without much work on your part, you may have to pay a company which collects such data. NAICS or D&B or some of the mailing list companies could make you a list.
[1] https://www.naics.com/code-search/?naicstrms=video
[2] https://www.google.com/basepages/producttype/taxonomy-with-i...
Not to beat this example to death, but there is a market for mobile video editing applications and I have no idea of its size. Wikipedia only lists one iOS product. I feel there would be a lot of value in providing this kind of information easily to people. I personally don't want to engage with a market research firm during the exploratory phase.
It's easy to see how many apps are in the store. It's a lot harder to know how much money they are grossing.