Im almost sure that Yami Yami will turn out to be a Mythical Zoan like luffy. Sun (Light) God vs Moon? (Darkness) God.
So he might get another Logia (Actual Logia) later.
As for awakening, Moon God "insert whatever name" and for Gura im not sure, WB should have awakened it (he had it for a long time) and there should be no (logical) reason for WB to hold back on MF so maybe that was awakened use of Gura Gura by WB unless lolda being lolda, he shows Gura Gura's awakening to be something else (which we haven't seen with WB) and gives us "He was old and sick so couldn't use awakening" which is just lel.