Not sure exactly what you mean, there are hundreds of different proteins, but in nutrition you have: first class proteins: proteins that contain the eight essential amino acids that cannot be produced in the human body and so must be eaten, they are usually found in meat. second class protein: proteins that are made up of non- essential amino acids, those that can be produced in the body.
The 2 major kinds are Globular and Fibrous
Two kinds: casein and whey.
The three kinds of protein in the hemoglobin are the albumin,fibrinogen,and the globulin.
In the standard cellular operations there are only twenty types of amino-acids in use. There are two 'in-frequent' exceptions.
There are more than two kinds. First there's coding, of messaging mRNA, which is used as the blueprint in protein synthesis. The two most prominent non-coding RNA's are tRNA (transfer) and rRNA (ribosomal). tRNA is connected to specific amino-acids and basepairs with mRNA to form a protein. rRNA is a part of the ribosome. There are quit a few other RNA's though.
meat and eggwhites
Salt, sugar, fat and protein
protein
Carbohydrates, Fat and Protein.
....o_o All kinds of people?
1000
there are two kinds in every person.