What race are Emperor Pilaf and Garlic Jr.?
Garlic Jr. is a Makyan ( natives of the Makyo Star) not a Albino Namekian. Albino Namekian are still presumed all dead. For Emperor Pilaf nothing much is know, we can assume him as earthling like other animal looking people.

Other Known Makyans


Cinnamon 
Garlic 
Ginger 
Herb
Jasmine
Mustard
Nicky
Salt
Sansho
Spice
Vinegar