I think the child’s species is a Whill and Mando needs to find the Guardians of the Whills. Makes sense that a rare species that’s so helpless for decades would need a group of devoted attendants.
Now that’s an interesting idea.
I’m curious about what Lucas thinks of all this as he used to have a rule that the EU could never explore Yoda’s species. On one hand I’d like to learn more about them, but I also like having some unanswered mysteries, so I at least hope Favreau/Filo will consult Lucas if they go this direction.