App notifications

Currently, I started doing some research to understand what type of notifications the app I’m designing need and also how frequently and so on, and I was wondering if there were any data on this.

So far I found 1 medium article that doesn’t have a "marketing" POV, so this is why I’m here

A bit of context about this app:

• Is not a commercial app whatsoever
• This is app goal is 100% informative about a worker and her/his paperwork on a company
• Its being build using React Native
• I’m aiming to cover just basic stuff since this is for an MVP

Things I’m doing right now: Inventory of possible notifications without any criteria in mind but the app content

Thanks in advance