Glycoproteins are proteins linked to carbohydrate also known as mucoprotein, eg, mucin of saliva. Haemoglobin is a chromoprotein, ie, protein in combination with a prosthetic group that is a pigment.
Lecithin is most abundant animal tissue phospholipid. It is an important constituent of lipoprotein (proteins conjugated with lipids).
Casein is a phosphoprotein (protein + phosphate). Phosphoproteins are proteins in combination with a phosphate containing radical other than a nucleic acid or a phospholipid.