Hello,
No worries at all! I’m happy to help!
I am not sure if I understand your question about group hierarchy; do you mean internal visibility?
Also, how do you create these projects? Through UI using a pre-defined template? Are you using a custom template?
Make sure that the readme file name is README.md and it is in the root of your repo. Also try to do steps that I proposed above (Proper use of renku dataset to link data from project to project).
BTW, could you import the other dataset: renku dataset import https://renkulab.io/datasets/67003e0c-0ae5-4663-9678-ae281ea8034d?
Best,
Mohammad