I understand that to be SD or D it needs to be 50% or more. And I understand that SD can contribute to D %. For example, a 25% super dwarf 25% dwarf can be considered a dwarf because its 50% dwarf, but it cannot be considered a super dwarf.

However, what is unclear even after listening to Garret, is if Kayuadi is SD or D.
Garret seems to suggest that Kayuadi = D, but I've seen many places were Kayuadi = SD.