Innova Small Bites (my personal fav that contains grains)
Evo Small Bites (What my Snickers eats

is grainfree but high protein)
Wellness Small Breed (Super tiny kibble)
Natural Balance Small Bites (Duck & Potato)
Artemis Fresh Mix Small Breed (mine also liked this!!)
Solid Gold Wee Bits
Good luck to you...so many of us have been through this. I remember having mounds of sample packs and being so confused. Put a few piles of each food out (if you can get the sample bags) & see which one your pup takes to the most. Chances are, they will keep eating it, even if your pup turns up their nose once or twice to it. Is your Yorkie still a puppy?? How old??
Smiles!!