Tapu Koko - Alisdragon
Tapu Lele - James
Xurkitree - Alisdragon
Guzzlord - Bloodwolf
Necrozma - Azure
Magearna - Bloodwolf
Blacephalon - James

This was actually a lot simpler than I thought, since the only one that had multiple requests was Necrozma.  Also, Magearna is still up for grabs if anyone wants it.  James, you can go ahead and catch the Blacephalon if you wish.