The amount of data in your data room depends on your startup's stage (Pre-Seed, Seed, or Series A). A data room at the Pre-Seed stage can impress VCs by showing you've done your homework. At Series A, it is a document without which you can’t close the round.
Create a folder structure that is clean and easy to navigate. Split your folders into 2-3 groups: General, Misc, and Other. Remember, investors' time is valuable, so make sure your structure is as simple as possible.
Provide a choice for investors: video or text format. Keep in mind that most of them do not have a lot of time to dive into your data room.
Read more about core documents here.
The classic Seed data room includes the following data:
https://docs.google.com/spreadsheets/d/1Lw0DSmA23_ZLkJW7-U46IrCZX_o1u0ic_yCJzaNugMo/edit?usp=sharing