CRO, Contributorship Research Ontology, an extension of CRediT, so perhaps it will gain traction, but probably at this point we should wait and see.
they wrote this manuscript about it using ManuBot.
Manubot also uses a YAML metadata format for authors and contributor roles. The YAML format is very similar) to that used in papaja. So we could, with not too much extra work, create a Manubot-YAML as well.
I'll summarize our discussion below.