Answer:
Are you just sorting them as what is and isn't plural?
Here:
GUSTA
La carne (the meat)
Comer en McDonalds (to eat in McDonalds)(ew)
El pescado (the fish)
GUSTAN
Las papas fritas (the French fries, or the fried potatoes directly translated)
Los frijoles (the BeAnS)
Las hamburguesas (the hamburgers)