A BJJ Nomad. I’ve seen them I know some.

It’s an attempt at “quality control” for a de-centralized grading system.

I’ve seen it listed both ways. A person lists their lineage as the person they got their black belt from and others change it to who they got their degrees from (if it’s a different person). The general consensus from reddit if that means anything is that your lineage stays with the person that awarded you the black belt. As a non black belt this is far removed from being an issue for me.

Also, it seems a lot of people don’t even know what their lineage is anyway. As an example, I see people list their lineage as: Carlos Gracie Sr > Carlos Gracie Jr when Helio Gracie actually promoted Carlos Gracie Jr to black belt.

Do we know that for sure? I have seen conflicting information on that. Carlos Jr. does say Helio trained him but I can't find anywhere where he said who gave him his black belt.

I wasn’t there but it has been publicized many places that way and have heard it discussed that way. My understanding is that by the time Carlinhos was born Carlos Sr. was basically already retired and Helio was in charge of training. Rolls and Rorion were his main training partners.