Hope this is helpful, as i don't really answer your question about data. My context - I'm a founder, I raised a decent sized round from a good fund.

I've never met an investor who wanted data on competitors or the "market" or opportunity or whatever. They'll want to know that you know about it, but through experience not research.

At seed stage they're mostly investing in you as a person. What you need is a story, not data, in my opinion.

Happy to help if you've got specific questions about raising / how to talk to investors.