There is a lot of available data out there, but most of them are either "closed source" or not up-to-date.
I wanted to create a world database of all Space Invaders (SI) available for everyone.
Here is the link https://github.com/goguelnikov/SpaceInvaders
I'll try to update it regularly
Idealy, I'll create a real base that people could push updates to and request information from. Do not hesitate to tell me if your interested.

main sources and credits:
- https://pnote.eu/projects/invaders/
- https://www.invader-spotter.art/
- https://medium.com/@cborel/mapinvaders-f661a4b3301c
- https://chborel.ch/mapinvaders/?luid=42158416-d25b-4f62-9b5c-e1236e31f540
- https://invadersaroundtheworld.fandom.com/fr/wiki/New_York#Liste_des_spaces_invaders