You can get the data form the link in the video description (as a csv file, which you can open in excel/sheets and then filter+sort, it's pretty easy). I did so for your question and after google translate:

Valle del sole Black eye beans

Valle del sole Green lentils

Conimex Kecap manis

Valle del sole Red kidney beans

Valle del sole Kievite beans

Valle del sole Dark green lentils

Valle del sole Black beans

AH Kidney beans

De Zaanse Hoeve Low-fat stirred yoghurt

De Zaanse Hoeve Low-fat cottage cheese

Valle del sole Black mung split beans

Valle del sole Large Lima Beans - Giant bread beans

AH Organic Yellow split lentils

Valle del sole Green lentils

AH High-fiber carbohydrate multi-seeds half

De Zaanse Hoeve Low-fat cottage cheese

AH Organic Kidney Beans

AH Skinny French cottage cheese

AH White beans

AH Organic Vegan tofu natural

So yeah beans, lentils, low-fat yogurts, tofu. Prices per 100g of protein go up fairly steadily along this list, starting at 1.35 and up to 2.60EUR. Prices per 1000kcal are mostly 1-2EUR for the plants, with the dairy products closer to 3-4.